I always try to get along with people, but in my career I have had most of my problems with co-workers. I work best by myself and their presence is always a bit difficult - even if their personalities don't rub me the wrong way.
There seem to be a lot of people who feel threatened in my profession (legal assistant) and there must be something about me that does it to them. Dang, I was in one job a couple years ago and the other gal who was there couldn't last two days with me before she was telling the boss how incompetent I was (I was learning new office procedures and programs) and acting so superior and in general so hostile toward me I couldn't figure it out. I was asked to leave..
I had another co-worker who disliked me from day one - hostility just dripped from her, but I could never figure out why - maybe because she was another introvert and so would never say anything to me. She gave me the silent treatment. I do that too, but I realized how uncomfortable it is to be on the receiving end of it.
I cope by ignoring the offending persons and saying nothing. I am always wondering why they are acting that way and what the heck have I done?
If I say something direct, it is usually because I have been pushed for months or years. This really only happens very rarely because I am VERY introverted.