Defeat is not the worst of failures. Not to have tried is the true failure.
George Edward Woodberry

Belief in oneself is one of the most important bricks in building any successful venture.
Lydia M. Child

If at first you do succeed - try to hide your astonishment.  ~Author Unknown

If at first you don't succeed, try, try again.  Then give up.  There's no use in being a damn fool about it.  ~W.C. Fields

If at first you don't succeed, destroy all evidence that you tried.  ~Author Unknown

If at first you don't succeed, failure may be your style.  ~Quentin Crisp

If at first you don't succeed, skydiving is not for you.  ~Arthur McAuliff (Thanks, Fernanda)