i'm 30 and I started playing guitar at age of 18, if you really love this, age doesn't matter. many famous guitarists started late too like Slash who started playing guitar when he was 15 and Glenn Tipton, one of the greatest metal guitarists ever, start when he was 21.
Dont think too much.

Well it is possible but only if you have hands. So to avoid losing your hands, stay away from hacking saws, hungry chimps, and don't steal from middle-eastern shop owners. Your welcome