What if I am not good at what I love to do?

Practice a lot have someone who is good help you with the problems they see Stay focused and DO NOT GIVE UP*

Keep doing it! Practice does make perfect, and if its something that you love, go ahead! People should be able to do whatever they like in life, regardless of skill.

Continue anyway. If you love it, and you practice, you'll get better. And if it makes you feel happy and good, then definitely continue.

"Being good" is so subjective. "Being good" at something can mean that you give it your heart and jump in with the love you have for it. So maybe the answer to to redefine "being good".

if you love it, then you will work hard at it and if you work hard at it you will be good at it success is 1% inspiration and 99% perspiration

Well if what you love to do is moral and makes you happy then you should focus on enjoying doing it and let yourself improve as you go. You could take example from others and try to improve in the same way they did. As long as you keep researching and practicing, you're bound to improve over time. If you just say "I'm not good" and end it there then you won't ever improve. Also, you should be happy for others success along with your own in what you're trying to do even if it's set up like a competition. Realize how much progress you've already made, treat others on the same path fairly and kindly and then you'll be able to get ahead without as much bitterness.