Don't think that you are a baby! I also had the same fears. I am someone who has struggled with weight my whole life... I was at first ashamed to even tell my family that it was something I was thinking about. When I finally approached my mother and told her I was thinking about it, she was on board right away... She even told me her friend had lap band and I talked to her for information to help me make the decision to go for it or not.
I knew that I wouldn't be able to lose weight all by myself and I needed an aid... And lap band is just that, a tool to help you lose weight... There is still a lot of work involved.
I found a surgeon that I felt comfortable with and went to an informational seminar and started my journey from there.... And for the fear of needles, I joke with the doctors and tell them "I'm deathly afraid of needles, so I'm just going to close my eyes".
I don't have a success story to share yet except that I was banded on may 11th... But that is the biggest step I have ever taken to help myself fight the battle...
I also had to go to support group meetings, and got a lot of tips from people who were already banded... Don't feel like you will be alone in the journey... There will always be people to support you either here on the forum, your family and friends, or support groups in your town! I guess my biggest advice is don't let things getting "stuck" or "needles" scare you away from being happy and healthy!