I am wondering if you are born with skill or if it is something that people must learn. I figured that it all just came naturally - I have always been comfortable on a bike and my skill just generally improves over time. However, a friend of mine has been riding a lot for 3-4 years and his skill level doesn't seem to improve. He even knows some of the stuff he does wrong, but cannot seem to improve his riding ability by himself. I've given him some tips and he has improved drastically - but I don't understand how you can ride for 3-4 years almost every day and not naturally improve? Am I just lucky that it is in my blood or something? Are you like me and just come to it naturally? Anyone else like my friend have trouble improving skill by yourself?