How to figure out what you would love to do?

I am really burnt out now with my job. I want to find my job that I will love. The question is how do you really find out what you are meant to do. The job that you will love. Is there a trick? Is there a secret? How do you really figure it out? I have never had a clue what my true love job is. You would think I would have figured it out by now, but I think I am more the rule than the exception.