Many things, like check out fluther.com asap!
Seriously though, I would tell myself to work on forgiving my bio-dad instead of trying to get him to change.
I would tell myself that I’m a good person and deserve the best things in life, so dump the guy I’m with and get back in college.
I’d tell myself that drinking and drugging don’t make you happy, they just waste time that could be spent helping others and being productive.
I’d tell myself that my vote does count and quit listening to people who tell me otherwise.
I’d tell myself to spend every minute possible with gma and gpa cause they don’t stick around too long.