Ah... the contradiction that is the monk. Monks are a real problem in most fantasy campaigns -- they're based on ascetic Asian martial artists which have no equivalent in the West. Thus, it's pretty hard to fit a monk into the culture. I find that monks then fall into one of two categories:
(a) they are actually foreigners from the Asia equivalent in your world and therefore have totally different cultural mores than everyone else
(b) monks are part of a strange quasi-atheistic cult that has secluded outposts/monasteries sprinkled throughout the countryside
Before I offered any advice, I'd want to know which category your character fell into and some details about the campaign world.
(a) they are actually foreigners from the Asia equivalent in your world and therefore have totally different cultural mores than everyone else
(b) monks are part of a strange quasi-atheistic cult that has secluded outposts/monasteries sprinkled throughout the countryside
Before I offered any advice, I'd want to know which category your character fell into and some details about the campaign world.