All it takes is a single step. I don't exude confidence, and I have a fairly low self esteem, and I'm an overweight guy. I don't have anyone either, and I would often mope around. But recently I started making changes.
It all started when I had a tightening in my chest and realized I needed to do something. I ended up signing up with a gym. I now have 3 sessions a week, and people recognize me, smile at me, and know me by name. It has become a new lifestyle for me. In doing so, I've not only lost weight, but I've gained new confidence and a new outlook on life. People around me comment to me how much I've changed, how much more positive I am. I also feel better about myself knowing that I'm doing something, and I also feel more healthy. So, all it takes is that one step.
In High School, I went to a summer camp. I ended up having a crush on this one girl. We ended up sharing a canoe together. There was this powerful attraction going on, to the point that she must have felt it too, because at the end of camp, when we were sitting in the cafeteria, she had a friend send me a note with her phone number. Back then, I was highly skeptical, having had lots of pranks and bullying done on me, and I didn't know what to think of it. Also, at the time, I had no idea who the girl actually was. I didn't know her name. But I searched the phone book, and because the number was unlisted, I never called. That's still one of my number-one fumbled moments and I still kick myself over it, and I sometimes wonder how things could have been different if I had made that call. But hey, I try not to think about it too much. She's probably happy and married.
I'm confident that will eventually be me one day though. There's a saying that you can attract the ones you want if you're happy. People will be able to tell that you're happy, they'll also be able to feel it.