If you could go back and do it all over again, knowing what you know now...

Make my money and then do whatever little I can to help others. Trying to change the world in my opinion us a waste of time, human beings are stubborn, and you also can't be sure your own opinion is the right one/best option. So I'd rather make millions and do the right thing, if people are inspired by my actions then they can emulate me.

The first thing I did differently would potentially change everything that came after, so theres a good chance what i knew would no longer apply.

I'll still be insignificant
it'll still be like farting against a wall thinking it'll propel you forward into toworrow