For one thing, I find the defensive tendencies of being in the box to have some utility in that the stuff you create to shore up your self-esteem isn't always meaningless (you might find better ways to do things or actual flaws in other people that do need to be dealt with).
Naturally the attitude of not caring about other people doesn't work well if that's dominant when you're actually communicating with them.
Its not necessarily a bad idea to remain open all the time, but I favor complicating things
