If you could go back in time and have a conversation with yourself at the age of 15, do you think you would like the person you were then?
Do you think that the 15 year old you would like the person you've become?
Is there anything you would warn yourself about in the future?
Would you want to do this?
Let's skip the obvious giving of lotto numbers, stock tips and the outcome of sporting events to bet on. You can't gain financially from this.
Let's also say that you've been given the A-OK from the powers that be and you don't have to worry about paradoxes and that you're not going to return to some fucked up world where your mom married Biff Tannen and lives in a casino and that Crispen Glover is dead. And that Jack and Kate are still on the Island.