Autarky
I was thinking that autarky, which Sumana mentions, was the same thing as autarchy, but they're different -- autos + arkein as opposed to autos + archein. It seems that they're pronounced the same in English, though! "Arkein" is to suffice or be adequate, and "archein" is to rule or command.
So emotional autarchy is a very different proposition from emotional autarky.
I used to think I had some of the latter, but then, someone could say, life happened to me. Well, you can conceive "emotional autarky" as a sign of immaturity or fearfulness, or as a sign of happy maturity, just as you can conceive economic autarky. Are countries which are seeking economic self-sufficiency being silly, frightened protectionists, or are they seeking proper maturity and self-reliance as countries?