I constantly audit how happy and fulfilled I am in my life. Whether it's my career, family, friends, health, etc, I'm always thinking about how I can make things better and more enjoyable. Bottom line: I know a lot of people that are not happy with their lives and have never done anything to better their scenario. I will not let that happen to me. Don't let it happen to you, either. Move towards what you want to do and what fulfills you.