Non Poker books that can help Your Poker Game?

[Pokerpun]

Can any one suggest non poker titles that might improve one's poker game?

My math side is pretty good but maybe my people/ empathy side could do with improving e.g. I find it very difficult to understand why any one would play a -EV game like craps yet apparently I believe plenty of poker players - even very good poker players do so.

Maybe psychology , self help or even novels which help develop understanding of others motivations.

Thanks for any Ideas.