The most important thing is often tolerance. I've found that above all else, the biggest predictor of success is whether a girl cares that on weekends I'm gonna get drunk, and when I get home I will pee on the front lawn. Then, the next morning I may be smoking my pipe and wearing a kimono. While I do this, I will drink so much coffee that I sweat. After that, I may surf the internet for awhile, and then spend much of my day doing very little before perseverating on something I'm writing or reading. In exchange for this, I tolerate Grey's Anatomy, chick music, flavored coffee, annoying passive-aggressive friends, wraps when I could have a burger, and throw pillows. Also, when the girl thinks that the world, particularly someone she works with, is out to destroy her, I say "man, what in the world is wrong with her? What a moron!".