Business Planning. In a nutshell: getting (mostly verbal) abuse from the Board for not being "aspirational" (i.e. failing to promise a three digits growth in the next two months), and then scorned by Operations for setting their targets too high.
Love my job, if not for it I wouldn't know how to curse in 50+ languages.
The only people who love me dearly are aircrews, as all I do on board is sleep.