Originally Posted by It'sNotTheBike
Here are a couple of quotes I like, which relate to your discussion above
concerning the artificial limitations people often place on themselves :
“The mind is its own place, and in itself can make a heaven of hell, a hell of heaven..”
- John Milton, Paradise Lost
"Argue for your limitations, and sure enough, they're yours"
- Richard Bach, Illusions
Great quotes--read both. The former I would not recommend to anyone unless they're writing a novel and are struggling to figure out how to make the villain more interesting than the protagonist. The latter is definitely worthwhile reading. Especially the intro.