It is not all about me

You know, I just decided that I have got a lot to say so bear with me. In my quest for my purpose, my reason for being here, a few questions have come up. Before I go any further, let me give credit where credit is due. I have embarked on a 40 day journey inspired by Rick Warren's book "The Purpose Driven Life". The first question is how can remind myself that life is not all about me.
Well I guess if everything I say and do impacts the lives of other people, it is not all about me. I guess if worrying only about me has got me to this empty place then it's not all about me. I guess if I live every single day just to get by and with no other purpose then it's not just about me. I guess I want something to define me and make me feel good about getting up every morning. What makes me feel that way? Helping other people. Doing something just anything for someone other than myself usually makes me feel pretty damn good. What are my obstacles to this?(That's another entry) Nothing but that big ass space between my ears and my fear of not being accepted or seeming phony. Bullshit answers. So what is the answer?
I recently ran across an ad in a very local newspaper for a legal representative for neglected and abused children. No pay involved. This position interested me enough to send in an application. However I've not done a damn thing since then. I guess now is a good time.