It takes no genius to observe that a one-man band never gets very big
Self-mastery calls for thorough familiarity with one's mental and emotional strengths. And it calls for sustaining a commitment to personal growth - the understanding of what makes you tick as an individual - as well as personal development.
All athletic accomplishments begin with volition; that is, the desire and willpower necessary to succeed. Volition affects more than thoughts and feelings - it affects physical performance.
The one element that stands out most clearly among our peak performers is their virtually unassailable belief in the likelihood of their own success.