kempoman14 said:
The ability to tell my past self things. Think about it; get a flat tire? Tell myself not to take this road. About to take a test? Tell myself all the answers. Got a girl pregnant? Tell myself about the bad condom. The applications are endless! Who hasn't wished they could tell themselves if something is a good or bad idea? Plus, I could warn myself about disasters, so that's cool.
That sounds like it would make a cool short story ... "the post-it notes you find in your wallet are in your handwriting and are successfully warning you against disaster ... but soon you realize; you haven't been experiencing the bad things, and thus haven't warned yourself to avoid them ... yet the notes keep appearing. Who is writing these and are they really trying to help you or are these notes part of something more sinister? Doodum!" 0_0
Edit: Oh yeah. What superpower? Perfect memory. That would be really good.