Before I told myself anything I would sit my parents down for a chat, I would have to prove to them that I was from the future (or they'd think I was a nut!) I would give them the details of every winner of every horse race & sporting event for a week, I doubt even my parents could dismiss proof like that.
I would then explain to them that they need to forget their hang ups & accept what I had to do to prevent a lifetime of depression & self loathing.
I would then give myself a list:
1: Knuckle down at school, childhood isn't a time for messing around, save that for when i'm earning buckets of money.
2: Tell my parents about my need to become female on the outside to match what's on the inside so I could start the transition as young as possible.
3: I would warn myself that my parents will get divorced when i'm 15 & when it happens don't go off the rails, just concentrate on school.
4: Invest in Microsoft, Sony & Virgin
5: I would give myself the winning lottery numbers for 3 or 4 large roll overs spread over a decade & advise myself to use a large amount of it to set up a charity/organisation to help Transpeople.
6: I'd tell myself to eat healthy & to never ever start smoking.
7: I would give myself a list of every major disaster (plane crashes, Tsunamis, volcanic eruptions, 911 & 7/7, floods & the NASA shuttle disaster)
Could you live with yourself if a future you came back & made you happy & wealthy but let all those people die? I don't think I could bear that guilt