C.D.
When my son was about 2 he use to put himself in time out when he was upset w/ me. (He also use to put the "leash" on to take himself for walks around the house.) He has grown up to be a well adjusted boy of 13 (as well adjusted as a 13 yr old can be). He still will go to his "cave" (the closet in his bed room) when he's upset w/ some family member. He just learned at an early age that he needed some time alone to work out his feelings.