My mantra – if you can call it that – is “Smaller, smaller.” It’s a principle more practical than spiritual, I suppose. I say it to myself several times a day to try and always remember that small things are easier to do than big things, and that most big things are really just a pile of small things if you break them up right.
That’s one I am using too. Well I try to. Most of the time.
(The mantra list he links to is great as well, have a click!)