I think that you can aquire a high level of skill any age if you work at it, so don't let your current age become a roadblock to achieving what you would like. So what if some kid who started early is really great by the time he's 20? Music, like art, is a personal journey, and a personal experience. I'm not gonna give up just because someone else is already a great guitarist, or because someone thinks that I'm too old.

The day I stop learning is the day I stop living. So far, I'm still alive :-)