Simple answer: Like other people have said, I'd go to the future to find out the winning lotto numbers, then go back to the present and get a winning ticket.
Heck, if The Doctor did it for Donna, I can do it for myself. As I've said about similar situations, it wouldn't be totally selfish of me, as I would use a good bit of the money to donate to charities.
Complicated answer: I would go into the future at several different points to spy on myself to see how my life was going. If I saw any thing I didn't like, I would find out how the problems came to pass, then go back to the present and figure out how to avoid the problem. Granted that all the problems I have in the present would be solved by the money from my simple answer.
Heck, if The Doctor did it for Donna, I can do it for myself. As I've said about similar situations, it wouldn't be totally selfish of me, as I would use a good bit of the money to donate to charities.
Complicated answer: I would go into the future at several different points to spy on myself to see how my life was going. If I saw any thing I didn't like, I would find out how the problems came to pass, then go back to the present and figure out how to avoid the problem. Granted that all the problems I have in the present would be solved by the money from my simple answer.