If you had the ability to travel one second into the future, how would you use that power?

i already do that

I am technically doing that right now without the aid of time dilation, gravity, and the speed of light. With the speed of light I'd instantly become a few milliseconds younger than someone my age on Earth.

To not get caught doing things I shouldn't. I don't know if a second is enough time though. I think a minute would be more useful.

Pfft