Your work is going to fill a large part of your life and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet keep looking. Don't settle. As with all matters of the heart you'll know when you find it.
Before I was a mom I used to think that parents who worried about their kids watching MTV were just clueless. Now that I'm a mom I see what the fuss was all about!