Darren Hodgson is an expert in helping people overcome shyness and build self-esteem, he's also the author of Obliterate Your shyness. To find out he can help you visit his website at www.shynessandself-esteem.com
When all is said and done there is only one way for you to build confidence and that is to just do it. If you want to become more confident at riding a bike you must first learn to ride the bike and then with some more practice your confidence will grow in this area and not the other way round.