be motivated

I saw a TV show.. I don`t remember how it is called, anyway I didn`t see it from the start, it was with some handicaped people, some had no arms, some in wheelchair, and they were doing sort of a race, they had to cross a jugle and stuff like that. It might seems like `Oh this is a piece of cake` for people who are physicaly normal, but it can be a hell for those who aren`t. Anyway the interesting thing was the power of their will, the motivation they had to finish this race, it`s fantastic, made my skin crawl. At that point I felt so ashamed of myself for not doing the best I can in everything I do.
And as for that people I have a huge respect! They really inspired me. Keep in mind that you can do anything as long as you really want to!
Good luck and hope this helps =)