Sometimes someone else says it better than you ever can; with that in mind here’s a post from Seth Godin:
Forgive yourself for not being the richest, the thinnest, the tallest, the one with the best hair. Forgive yourself for not being the most successful, the cutest or the one with the fastest time. Forgive yourself for not winning every round.
Forgive yourself for being afraid.
But don’t let yourself off the hook, never forgive yourself, for not caring or not trying.
(You really must subscribe to his list, if you don’t already . . . .)