HotWings, I love that quote! It rings so true for me; if I keep up my old habits, how can I expect any change in myself?
I just finished reading Walden by Thoreau and found a few quotes I really enjoyed:
"I have learned, that if one advances confidently in the direction of his dreams, and endeavors to live the life he has imagined, he will meet with a success unexpected in common hours."
"If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them."