X-MEN: Days of Future Past

I'm not a comic book nerd (I love to be one, but time and money won't let me be), but I really loved watching X-Men movies, especially now that my favorite actor, James McAvoy (loved him first at Inside I'm Dancing), started to become a mutant on X-Men: First Class.
And at last, on May 23, X-Men: Days of Future Past will be showing in the Philippines!
Here's the trailer:

It will be epic! Like this poster is:

I really want to watch this movie, so to have free passes, I must answer this question:

"What would you correct from your past to save the future?"

If it's from MY past, I would DO more. I embedded in my brains that if I have good grades, everything will follow. So I just studied, avoided extracurriculars, and did not do anything much. I want to do more. So that I could save the future emo-me from college.

If it's from the past, I would stop every person who thought of nuclear weapons (who made a thesis about it, who endorse it to big companies/government, etc) and used them to bomb the Earth. It's hard enough to live without being afraid of the countries with the weapons, right?