Writer, Agilist, Elder Geek
So much like us here, you want to promote the idea of professional geekery. You want to remind people "hey you can do what you love," and in some case wave it around to remind people it's TRUE.
So be a mentor to a current or future progeek or a bunch of them.
A great thing about being a fan, a gaming geek, a pro-geek, etc. is that we can find all sorts of role models – from famous programmers to great artists and the like, there are people whom we can model ourselves after and learn from.
Let me make another suggestion for using your friends and fandom to improve: what I call Mentor chains.