Green Button instantly. Who's to say that the events that happened in your past were fated to happen? You could have the future knowledge and change many aspects of your life, but then you would not be the same person you are today. Also, you might not avert global events.
Green button = You instantly receive $2 million (tax free).
Red button = You go back in time and restart your life at 10 years of age, with all the knowledge you have today.
You can press just once. Which do you press?