One thing that I learned to do when I was on deployment was to be assertive.  I can assure you if we meet it's going to be truthfulness from me.  If you don't like it then we shouldn't be friends anyway.  I'd take a true "enemy" rather than a fake friend.  I respect when people tell me the truth, I actually thank someone who tells me they don't like what I do, at least you're being honest. 