If I had to have one superpower it would be to control time.
If I were able to pause time, I could get out of sticky situations, do good within my community, and also snag me some investment money.
You could help people with a variety of things, such as saving lives from a car accident, warn people about future decisions, and invest in future money making ideas.
It would be just like in Back To The Future (2 in particular), but with this power comes great responsibility and you would have to be careful about the rules of time. You would have to create guidelines so you don't harm others or yourself.