Take Better Risks.
Make Better Decisions.
Deliver Better Results.

– Even Under Extraordinary Pressure.

Welcome to The Shull Method: Mental Skills 2.0

The ReThink Group is a boutique decision and performance consultancy which leverages the cutting-edge Shull Method to improve the performance of individuals and teams.  Whether you are an investor, trader, athlete, entertainer – or someone who manages, coaches or directs those individuals – we specialize in difficult decision making and in creating the X-factor of exceptional productivity.

Find out how to channel your fears, focus your anger, and recover from disappointments to create new levels of success. You will find yourself taking better risks, making better decisions and delivering better results – even when you are under extraordinary public or private pressure. If it seems like there is a wall or mystery around why you or your team can’t break through, let us help.

Investing & Trading

Investors, Traders, Analysts, CROs

Better understand your convictions, capitalize on valid intuitions and strategically manage the uncertainty of financial markets to optimize your high-risk, high-reward decisions.


Pro Sports

Athletes, Coaches, General Managers

Increase resilience, sharpen your mental edge and consistently outperform the competition by learning new ways to rise to the occasion, amplify motivation and quickly recover from setbacks



Actors, Agents, Directors and Producers

Tap directly into fears, disappointments and joys to perform, produce, direct or even create more effectively and authentically.



“I have been competing in Snowboard Cross for 20+ years and have been exposed to many different forms of training, both physical and mental. After working with Denise, I felt more comfortable with my emotions because I could understand what they were doing to my body, and determine if was positive or negative. Understanding how I was reacting to my emotions, allowed me to anticipate the impact they could have on my body and learn how to make them work in my favor.
- Lindsey Jacobellis, Most Decorated Snowboard Cross Athlete & U.S. Olympic Snowboarder

“Denise has helped me see my past in a way that no one else has, and now I am moving toward my professional soccer career in a way that encourages me. Most of, if not all, of any future success I have will be attributable to Denise."
- Julian B

“In addition to being one of the most authentic and insightful people I know, no talent, technology, or person comes close to Denise in helping you crack your own code."
- Paul Jablonski , CIO, Kraken LP

“We brought in Denise Shull and The ReThink Group to expand our performance program and to obtain the benefits of a top-flight mental game for all our pit crews. Feedback from our athletes has been very positive and we've already experienced benefits in the races at Talladega and Dover. We look forward to continuing to learn from ReThink and to achieve the competitive advantages we anticipate will occur from our work together."
- Andy Papathanassiou, Hendrick Motorsports

“Even the smartest people in the room are listening when Denise is sharing insights on how we overcome our behavioral biases. Denise tells you how to hire the X-factor of portfolio management, how PMs come back from a losing streak and how to help COO's create a coaching environment, all in 60 mins"
- Avijit Choudhury, APAC Head of Capital & Consulting Services, UBS

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Our Services

1:1 Coaching & Advising

ReThink’s coaching and consulting is unlike any other coaching you may have experienced. Using our more nuanced understanding of human motivations, we help our clients unlock new insights and competencies. Clients come away with a more durable sense of confidence, even in the most stressful situations and careers. LEARN MORE


Our customized workshops help teams and individuals identify more robust strategies to break through to the next level of performance. By cultivating more skills in conviction analysis, risk-taking and team dynamics, participants are better equipped to handle high-risk decision making, ever-changing team dynamics and their own personal hurdles. LEARN MORE

Talent Assessment

We offer a unique, cutting-edge tool to evaluate the crucial, yet-puzzling, aspects of the so-called intangibles in hiring. Our demonstrated-skill assessment tool quantifies a candidate’s X-factor potential by discovering their qualitative thinking skills. Our proprietary neuroscience and psychology-backed algorithm then translates those skills into a score you can actually use and understand. LEARN MORE

Our Team

Denise Shull

Performance, Strategy
and Decision Advisor

Bill Long

Chief of Staff

John Burns

Senior Consultant
Performance Advisor

Evan Marks

Performance Advisor



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Keep up to date on ReThink’s latest news with periodic email updates.