"The brick walls are there for a reason. The brick walls are not there to keep us out; the brick walls are there to give us a chance to show how badly we want something. The brick walls are there to stop the people who don't want it badly enough. They are there to stop the other people!" - Randy Pausch (The Last Lecture)
Never seen The Last Lecture by Randy Pausch?! Watch it when you have a few minutes and be inspired to live your childhood dreams. Definitely worth it! Or, check out a sample of the quotes from this lecture here. Good stuff!