I am baffled as to what exactly is integration, and is it the same as Co-consciousness?

I am co-conscious with some. Some of them not...but to varying degrees.

I find that although at times, I find myself in complete distress over being this way, and sometimes it drives me insane and I feel its driving me up the darn wall, at the same time Im not used to being "alone in my head", Im used to them, I would miss them if I ended up just "Puzzle_" I dont know if I would miss the ones I don't know much about but anyway,
Do we all HAVE to integrate??? Is that the only possible way of healing?

Puzzle_ Puzzle_