I only need one choice

You know the feeling ...
Every time when you have decided on something, the plan always gets thwarted.
Like literally inside my mind there's always an Angel V.s Devil battle.
I do all the fightings in my mind.
The choices I always regret.
The mistakes I've learned.
The same thing will repeat.

I'm talking about things in general, not about love and relation, you know it's impossible.