The way to get started is to quit talking and begin doing.
Galinda didn't see the verdant world through the glass of the carriage; she saw her own reflection instead. She had the nearsightedness of youth. She reasoned that because she was beautiful she was significant, though what she signified, and to whom, was not clear yet...She was, after all, on her way to Shiz because she was smart. But there was more than one way to be smart.
Not being able to fully understand God is frustrating but it is ridiculous for us to think we have the right to limit God to something we are capable of comprehending. What a stunted, insignificant god that would be! If my mind is the size of a soda can and God is the size of all the oceans, it would be stupid for me to say He is only the small amount of water I can scoop into my little can. God is so much bigger, so far beyond our time-encased, air/food/sleep-dependent lives.