Shyness can sometimes be a problem for you. The problem being that other people mistake your shyness for smug confidence! You may not even recognize your shyness if you have been this way all your life. Consider coming forward with your uncertainty - those around you will be more than willing to help. If you want to try a new type of workout but are afraid to do it alone, ask a friend to try it with you! Or find an app where you can ask a trainer to explain different exercises and how you best could do them. You could be surprised how much people like to part with their advice.