Performance = Capability + Behavior
That equation was highlighted in the book Legacy which describes the mental skills training and team building philosophy of the All Blacks Rugby Team. The emphasis on behavior is crucial because it seems to be the hardest part for most change or improve on. Most people are very good at creating goals or envisioning a better future, but are troubled with the space between goal intention and purposeful action.
The book describes how each of... us operate within a public and private domains. The public domain in your training would be how you interact and utilize practices, workouts, and skill development training.
The private domain is the one that is most challenging. That is where we need to confront our fears, limitations, stressors, and habits.
When you are able to maximize your public and private domains it expands your performance potential.