The only test is what you see when you look in a mirror.
If you want to continue to be the best in the world, then you have to train and compete like you are second best in the world.
Trust in your own beliefs or succumb to the influence of others'.
Mix with positive-minded people as a means to tap into your unexploited potential.
Success is virulent. Once you get the bug then it's in you.
Every time a champion makes a decision they have a chance to learn something new, regardless of the outcome.