You only get out what you put in. Whether your goal is to enact change on a grand scale or within yourself, it's important to remember that progress comes with effort. Will Rodgers said that "Even if you're on the right track, you'll get run over if you just sit there."
Commit to action. But don't stress over the length or difficulty of your journey. The turtle takes as much time as he needs to get to where he needs to go, but the point is that he gets there eventually. And you will too. Just enjoy the process. Every opportunity is a new learning experience.
Theodore Roosevelt said to "Do what you can, with what you have, where you are." Don't worry about what everyone else is doing; just concentrate on yourself. And no matter how small, just do something. All of those little somethings will eventually converge into big things.