We've all got to live together...or do we? Technically, yes. The last we checked, humans need neighbours. We depend on each other for support, and no one is selling real estate on other planets yet. Knowing this doesn't seem to make it easier to get along. 

What does help us get along? Agreements about how we will co-exist.

At the first sign of a challenge or a potential challenge with a neighbour, hire a mediator to help you determine your values and needs and those of your neighbour and a game plan for how to peacefully coexist - with values intact and needs met. Then get back to your peaceful enjoyment of your home or work space.