The price of discipline is a fraction of the price of regret.
If you are reading this, never give up. You will eventually succeed. Face your fears. Pick up the heaviest load you can. Who cares if others think it's light. It's your load, not theirs.
Complacency is such a dangerous thing. Imagine a world where everyone honestly sought to improve themselves. For God's sake, play the hand you're dealt and, with his help, make the best of it.
I wish someone had told me this in my 20s.