I don't see peace as the lack of conflict anymore. I used to believe taking my frustrations and anxieties inward was peace-keeping. I've since learned the illusion of outer peace can preserve inner turmoil. Peace keepers tell the truth carefully, listen well, search for common ground and understanding, gain perspective.
It's about choosing neither fight nor flight. It's about staying, working toward resolution, allowing the middle place to exist when necessary, but always returning. Harmony in my own little corner of the world is important to me, so I sometimes need to separate from conflict to care for my sensitive self and come back to a hard conversation. Cool off. Try to think rationally.
Separation isn't always the answer though. I think it's also about the "withness" -- finding peace in the midst of darkness, pain, confusion, chaos, lack. This is a major tenet of mindfulness: acknowledging thoughts, fears, and distractions as they swim through, while not allowing them to take over. Not shutting them out or reprimanding them, but sitting with it. Contentment. Acceptance.