OP, real talk--I just saw your avatar. Assuming it's true and that you've aligned your lifestream with the so called activity called tennis, you must learn to ignore all else that does not pertain to your life. Does this make sense? Good. When you understand this, you will not be tormented by the past any longer.
On a side note, now that someone has reminded my stomach to growl, I better head off to sleep before it starts to roar. Ciaociao.