I don't share too much. Sharing makes me feel weak sometimes but yeah sometimes it helps a lot. Though it's hard for me to find out when sharing is going to help me and when going to trigger my depression. I'm not hiding in room though but in my own self. Escaping from some facts that I can't accept. Avoiding to talk or listen about certain issues...
I think if this hiding can make you feel better then do it. Do anything that helps to develop positive energies in you.
Well written thread!