Here's a great list of myths that are holding us back from changing the world. It's a pretty comprehensive list, and takes people to task for a lot of misconceptions and excuses we all use to explain why we can't possibly create change.
Just remember, change is one person away from happening. It just takes one to inspire more, and so one, until change has occurred. We need change. We are desperate for change. We can change. It takes commitment, sacrfice, and time, but it can be done. Let's get started.