I was very moved by the post of the unregistered lady and just wanted to reach out and give you a hug. My motto is it is never to late and always think outside the box.
We all face obstacles in our lives that prevent us from following certain dreams we have. As a young teen I wanted to be a ballerina . Well, I guess my parents took a good look at my stature and thought that's never gonna happen! So, I did the next best thing. I talked a friend into joining me to enroll in ballet classes. We convinced our sport teacher, who also gave ballet classes to give us a try. At the time she taught 5-8 year old and the two of us stuck out like over sized bean poles. Once we progressed enough to try getting airborne reality settled in amidst lots of giggles, that maybe I was not cut out to be a graceful swan.
Then came the next dream. I really, really wanted to have a piano. This dream stayed with me into adult hood and eventually turned from a cheap keyboard into an upright. I will never be a pianist and perform, but I learned enough to drive my family crazy and totally enjoy my time at the keys!
I am telling you this, because I think you should hang on to your dream and think outside the box. Be creative and start by dragging around a sketch book. Doodle in it while you are on your coffee break, while you are sitting around waiting.... Invest in the DVD's as Steven suggested. I love those because you can pause 1001 times if needed and work at your own pace. Before you know it you will get better and people start to peek over your shoulder. With the built up of confidence you might even start to draw or paint someone.
Just never give up on your dream - where there is a will, there is always a way!