I could not possibly count all the duties and obligations of a performer. It takes years, luck and a lifetime.

There are promises made by all sorts of performance enhancement strategies. To list a few are superstition, food, drink, beta blockers, pot, stimulants. You only have control of your baseline performance.

Any given session has the potential for an epic fail or success. The more you burden the equation of performance the riskier it gets.

In the real world you have to feel it, be it, go for it and kick some ass.