Self motivation, for me comes from self-examination, reflection, meditation and affirmation.
Self-examination to know and understand what I really want.
Reflection to measure how I'm doing against my goals.
Meditation to insure that what I think I want is what I really want and what I'm called to do.
and affirmation to keep me prepared to go on when the going gets tough!
Maybe the biggest factor in motivation for me is knowing that I don't know everything, I don't have everything and I'm not all that and a bag of chips. But, I also understand that from the day I was born into this world until today, I know enough, I have enough and I am enough to do whatever I set out to do!