Time Stone, to be able to reverse anything I might messed up. And to know the possible futures that might happen

Then how are you supposed to learn from your mistakes if you don't live the consequences of your actions?

Reality Stone

Reality stone

Mind stone

Space Stone... travelling between different points in space in a blink of an eye, is one hell of a useful action.

Mind stone...

@Marvelus Exactly, I'll learn from my actions and mistakes and make it better for the benefit of others