To take a really honest look at yourself is one of the hardest things in the world to do. It's not always fun to examine the real you, warts and all, but it's a great first step when things in your life are not going the way you'd like to see them go.
I have a good career in Information Technology, I earn six figures, I received a really nice bonus six weeks ago (I mean, really nice) and here I am, busting my butt for an online business that I don't have the passion or desire to do. So... I quit.