Where focus goes, energy flows. And where energy flows, whatever you're focusing on grows. In other words, your life is controlled by what you focus on. That's why you need to focus on where you want to go, not on what you fear. When you next find yourself in a state of uncertainty, resist your fear. Shift your focus toward where you want to go and your actions will take you in that direction.
If you find yourself saying 'I can't do something', but you know it in your heart of hearts that if you do it, you're going to grow, you're going to be a better person, it's going to contribute to your family or to your kids or to something that matters, and you keep saying 'I can't do it,' there is no question—you must do it. You don't discuss it anymore. You just take immediate action... You do what's necessary.
If you don't make a conscious effort to control your focus-and decide in advance which things you're going to focus on-you'll be so pulled by the demands of the world that you will soon find yourself living in reaction rather than living a life plan you've designed for yourself.
We feel most small, we feel most challenged when we're only focusing on ourselves. Because even when you fulfill yourself, meaning you get what you think you want, you still find yourself in a position where it's never enough.