Self Introduction

Hello everyone, I'm a actuarial science student and I have a strong entrepreneur motivation, since I don't really know what to do yet I'm going to start something like a blog here!
At this time I'm gonna talk more about myself.
I'm Brazilian and I live in Sao Paulo - so pardon my poor English. I am 22 years old and I study at USP.
For the last years I've been wondering:

WHAT SHOULD I DO WITH MY LIFE/CAREER???

Should I work in a big multinational firm and work my ass off to get a high position? It would be good, it's a comfortable path, work your hours take off yor vacation, do a trip to different places have a family and die.
Yeeeeeeeeh, doesn't attract me this much.
I already worked at a very huge company, I used to think only about money money money. But then, after seven months working like 13 hours daily, very often on weekends, I realized that I was not making any difference in the world at all. Everything I was doing was helping rich people get richer, so I quit.

I kept thinking with myself what to in a way that helps people and earn money too, a thing that would be nice for me and for those who needs help. I didn't find it yet or at least couldn't work in something concrete. But I have some really good ideas which would need time and a lot of knowledge. I'm gonna share some thoughts: microfinances are essential to development in highly poor areas, and yet in this areas people need more healthy care, how we could join this two things?

So, I started this post with something in mind and finished it in a total different way, but I think you guys can have a better figure of me now and how I think.

The next post I'm gonna tell you what about I'm gonna write and the way I think this thing will lead.

See you guys, stay alive!