"I invited Sheryl to be a guest panelist for our Female Start-Up Founder Speaker Series. Our topic was 'Mental Toughness for Women in High-Tech Start-Ups'. Sheryl's content was well-thought out, innovative and impactful. Sheryl connected easily with our audience and provided clear actionable take-aways on how to be more Mentally Tough, especially in high pressure situations and also strategies to recover when setbacks occur. Sheryl delivered, and we'll definitely have her back."

Amy Bunszel
Vice President, AutoCAD Products

 "I work in the commercial card product group for Bank of America. I’m also the co-chair of LEAD for Women which is one of the bank’s employee network groups. Today I attended Sheryl Kline’s Mental Toughness for Women seminar... I learned to focus on the goals that I want to achieve and how I need to move them forward. Thanks Sheryl!"

Janet Guthrie
Director, SVP, Senior Product Manager

"Sheryl was a panelist for a recent event in our Female Founder Happy Hour Series that we hosted with Autodesk. The topic was 'Building Mental Toughness' and Sheryl's content was practical and engaging. Attendees were engaged and left with clear take-aways on how to be more mentally tough, especially in high pressure situations. Sheryl was inspiring and effective, and we can't wait to work with her again!"

Kristen Brillantes
Design Producer, Coach, Facilitator

"I found this ['Mental Toughness in the Workplace: How to Build an Influential Mindset'] session so personally helpful and especially your presence. You did a great job connecting with the audience and the specific challenges."

Aida Rivas
Senior Program Manager



"My old habits of working all night, or my old habits of being hyper-available weren’t serving me. So I think having clarity and more skills around Mental Toughness to be able to discern where my responsibilities started and stopped [at my job] and where the client’s responsibilities were that would have empowered me to NOT slip into old behaviors. For me that was getting into over-eating again and getting into over-working again … those things that I did a lot of work to keep at bay … I slipped back into it and I think it was because I was lacking some of the Mental Toughness skills and I was taking on board more than was fair.

Being Mentally Tough has given me much more control over my life, and I've never been happier!"

Amanda Kaufman
Former Senior Consultant

"I was struggling with prioritization and organization, balancing the many demands of life and maintaining a focus that isn’t overcome with the many distractions I face on a daily basis. These have been three areas that have challenged me for a long time and I have spent time working to improve in these areas in the past with other coaches and through other programs. In working with Sheryl over the last three months, I can honestly say that I have felt dramatic improvement in each area and I am very grateful to her for her excellent coaching that has helped me become the best version of me!"
I highly recommend Sheryl to anyone who is looking to “step up their game” and become a high performer in whatever they do, whether career, family, school, athletics or otherwise. Sheryl has also had great success in working with my wife, and helped her achieve many breakthroughs, as has also been the case for me. We are grateful to have Sheryl in our lives and enthusiastically endorse her as a World-Class Coach!"

Michael Sollazzo
Partner and Wealth Management Counsel
Capital Planning Advisors

Read Michael's Profile

"If you're like me ... the kind of person that wants to be the best they can be, and wants to show up with confidence that you can excel at whatever it is that you're trying to do ... then I think this [Mental Toughness Academy] program is a worthwhile investment in your future."

Ken Steven
Growth-Trend Marketing Consultants

"I contacted Sheryl Kline when I was feeling lack of focus and sense of achievement with my day to day life. Coincidentally, my daughter was taking her Mental Toughness online course as part of participating in the club volleyball team. While listening to some of the video lectures, it dawned on me that adults could use the skills she was teaching teens.

Sheryl has helped me clarify priority for my life, and not just what is important to me, but WHY it is important to me. This has helped focus my energy to what matters most to me, and as a result I feel more in control. I have also regained the sense of calm even when I am overwhelmed with the amount of juggling I deal with personally and professionally.

I highly recommend Sheryl and her Mental Toughness program – if you are looking to improve the outlook for your life by feeling productive and purposeful, this program will help you get there."

Sr.-Level Project Manager
Data Security Company, Mountain View, CA

Read the Testimonial

"I was at a place where I was doing well, but I knew I was limiting myself. I couldn't quite get over what it was exactly that was holding me back. So, I had Sheryl really help me to get some huge breakthroughs … not just in my business, but in my life, and really understand those things, and those little tiny habits, little tiny thoughts that we're consuming me to really get over that hump and help me get to that next level.

I cannot recommend her enough for High Performance coaching. She was so helpful. Really opened my eyes to so many things… so many stories I've been telling myself that just simply weren't true. It was a really great experience to help me get those breakthroughs… not just in my business, but in my life and help me get to that next level."

Erin Smith
The Starter’s Club & The Entrepreneur Summit

"Mental Toughness and High Performance Coaching with Sheryl has helped me personally and professionally. I now have greater clarity on what's important to me as well as the tools to plan and achieve my best. I did not realize what I was missing out on all these years to help me reach my full potential. High Performance Coaching is a vital piece to my success at work and at home. I highly recommend Sheryl and this program to help you be your best, and most importantly, to find your joy and balance."

COO and Managing Principal
San Francisco Bay Area Insurance Agency


“I have to say that what I have observed over the past week has been OUTSTANDING in all respects – outstanding error recovery; interacting with teammates; interacting at home; reaching out to invite others ... etc.”

Father of a 15 Year-Old
High School Soccer Student-Athlete

My daughter plays competitive volleyball. At the end of the past season she told me that she wanted to talk to someone about how she was feeling during matches and at practice. Her main challenges were being very hard on herself and therefore not able to recover efficiently from errors.  She also tended to get frustrated with certain team dynamics. After she received coaching on the “ZONED-IN” Mental Toughness framework, she began to understand how to monitor and take control of her feelings on and off the court, so she could play to the best of her ability, consistently. When high school tryouts began, my daughter felt prepared for the challenge and competition. My daughter has a new focus on the court and is all about the “job” at hand. It shows – she was named as a captain for her team. Sheryl’s curriculum and Mental Toughness framework helped my daughter step up to the next level. Thank you Sheryl.”

Mother of a Competitive U15 Club and
High School Volleyball Student-Athlete

"As an equestrian athlete, I can put a great deal of pressure on myself. With all the hours I put into my practice, I want to do my absolute best. However, when I go to the show ring and have all of this pressure building up, my nerves arise. These nerves proved to be debilitating and distracting with too many questions of “What might go wrong?” “This has gone wrong in the past!” and “I’m a terrible rider!” These thoughts almost convinced me to put my riding career to an end.
"This is where Sheryl came in. She introduced me to a type of work out just as important as my physical training—training of the mind. She was able to help me pinpoint the causes of my nerves, and help me rationalize the pressure I had been putting on myself. Through a variety of techniques such as progressive relaxation, GAP Training, and visualization I became able to manage my anxieties and ease up on the burdens that I unnecessarily placed on myself. The results showed. In an environment of competitors where physical talents equalize, having the ability to control my thoughts and feelings is a definite competitive edge. Now, with Sheryl’s amazing help and guidance, I continue set goals for myself and lay out the groundwork to achieve them.

Thank you Sheryl, for helping me find my joy!"

Peyton, Equestrian Show-Jumping Athlete, (Age 18)

Read Peyton's Profile

“High level junior tennis players need to master Mental Toughness skills to develop and play to their potential, consistently. Managing nerves, distractions, and maintaining focus before after and during points are just a few examples. I have referred junior players to Sheryl over the past three years and seen the results that her curriculum and system produce."

Paul Torricelli, Former Head Men's Tennis Coach, Northwestern University

“In the formation of our Boy's U17 team for the upcoming season, we knew we had a physically talented team, but would be lacking any strong team cohesion. Once the team had bought into the idea that training their mental game was just as important as developing their physical competencies, our team began to exhibit the necessary success traits consistent with championship level teams.  We give a large amount of credit to Sheryl for her "ZONED-IN" Mental Toughness framework in helping the team to realize their potential, at an accelerated rate, and ultimately achieving our stated goal.”

Roger Worsley, Club Director and Coach
Pacific Rim Volleyball Club

Read the Pacific Rim Boy's U17 Volleyball Club Team Case Study

"Mental Toughness training has helped me gain the discipline and knowledge to play completely in the present, so I can compete at my full potential consistently. It was also a key factor in preparing me to play Men’s Division I tennis and will continue to throughout college." 

Division 1 College Tennis Player, (Age 18)

“I have a teenage daughter who plays competitive volleyball. A year ago we noticed she was struggling on the court ... really she was struggling with her emotions, and what to do after she made a mistake. After learning Sheryl’s Mental Toughness framework, we’ve noticed a huge improvement. It was applicable, it was easy to understand, and it wasn’t just a quick fix. I feel it’s a tool she can use throughout her life ... she can take this with her through high school, college, and into her working career ... whatever it is.  Using the "ZONED-IN" Mental Toughness framework really is a life tool, and it’s a gift you can give your teen.”

Mother of a 16 Year-Old Competitive Club and High School Volleyball Student-Athlete


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