How do I become self confident?

You're hot, and just remember that. :)

Relationships are like those wooden toys that they give to babies... They have to match the shape of the bricks with the shape of the holes. They try and try and eventually they get the square in the square, etc. So, you talk to someone, maybe ask them out... And if the circle doesn't fit the square you just move on and try someone else. Don't consider it a rejection or a condemnation of you, it's not, it's just that you don't fit that particular person. The more tries you have the sooner you'll find that ideal fit that is just waiting somewhere.

So, be yourself, remember that everyone - even the rich and famous - have self-doubt and that it's just that some are better at concealing it or compensating for it... And that one day you'll find the girl who will totally click with you

You look young in your avatar. Believe me, breaking up and trying relationships are all part of growing up. Just be a little slower and a bit more careful of who you decide to get involved with. I suspect the people you've been out with really don't have much depth to them and are quite the opposite to you.

I would take some night time courses in something you enjoy--anything--sport, cooking, acting etc and just go out and meet different types of people. Confidence is just about being comfortable with yourself, not better than anyone.

Don't analyze everything so much. Do something without thinking of all the possible ways it could go round. Take a risk.

take your diary , write abt your good qualities like iam good at giving a speech, at playing football ! all positive things abt you !and re - read it everyday and from this youll get +ve energy!

BELIVE IN UR SELF :) keep thinking of postive things

Just relax, I think your cool ;-)