Hi Tracy. I’d like to piggy-back on what Joanne has said. An almost natural by-product of “owning the knowledge” is that this will improve your confidence. Being confident as you approach potential clients or they approach you has a way of giving you instant credibility, making you more relaxed as you discuss fitness issues, and to allow the potential client to view you as someone who can truly help them reach their fitness goals. Hone your confidence and people skills by having friends and family ask you any fitness questions that come to mind. By practicing your communication and knowledge in this “protected environment” you will begin to gain confidence and perhaps just importantly, discover areas that you may need more knowledge in before tackling “live clients.”
I hope this helps – good luck!