Learning anything is all about self improvement and learning as you go from your and others mistakes. You need to walk before you can run. Learning to walk usually involves crawling first and much falling over. Do not stop learning because of the fear that you might fall over. Remember anyone who has never made a mistake has never made anything.
I would say spend time and money on your music, make demos and all the other things folk do. Just remember that it is all part of the learning curve. OK in all probability it will not make you rich or famous but it will give you satisfaction and a sense of achievement. It will broaden horizons, give you great skills and a great hobby. Along the way you will also meet lots of new friends.