Stop stewing and start doing!
Life is inherently risky. There is only one big risk you should avoid at all costs, and that is the risk of doing nothing.
You must learn from your past mistakes, but not lean on your past successes.
The less you try to impress, the more impressive you are.
Come through for others and they will come through for you.
Instead of just letting life happen, I'm going to make it happen for me.