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"Our life is frittered away by detail... Simplify, simplify." - Henry David Thorough
W. Timothy Gallwey, author of the best-selling book, The Inner Game of Tennis, says that achieving optimal performance in sports (or almost anything else for that matter requiring focus) is dependent on potential and the ability to focus or conversely, as he states in the following formula, the ability to minimize interference. In other words:
Performance = potential - interference
or
P = p - i
If interference (i) is zero, then performance (P) equals potential (p), which is the best we can hope to achieve on race day.
As triathletes, we can use Gallwey's formula as a simple tool to first identify then fix the interferences – the things that hold us back from achieving our potential on race day.
The key to using this tool effectively is to take a few minutes to list out the factors that impact your performance on race day then identify and prioritize the action steps that you can take to reduce them.
As an example, here are some factors that you've experienced in past races, which might impact your performance on race day:
Next, list out actions you can take to mitigate each factor. Using the examples above, actions might be:
At the end of the day, we all have different goals, time constraints and natural abilities that define our potential performance level, but we can all actions to reduce the interferences that keep us from reaching our own unique performance potential whatever that may be.
With the triathlon season coming to a close, now is an excellent time to take a few minutes, identify the things that are holding you back then list out and prioritize the actions steps you need to take to race even faster next year.
Happy training!

David Glover
Author of Full Time & Sub-Nine: Fitting Iron Distance Training into Everyday Life, David dabbles extensively in endurance sports as an elite triathlete, coach, writer and race director. He has helped hundreds of individuals through coaching, educational seminars and eBooks. As an athlete, his accolades include an 8:51 Ironman PR and being the 2007 inductee into the Vineman Hall of Fame. For more information about David, please visit:
www.davidglover.net