I get what you mean....due to my various conditions I have to try and limit my stress as it makes various symptoms worse which I can't always deal with too well usually I don't deal with it too well. But yeah that includes positive stress, which can be difficult because if I am enjoying myself I don't want to hold back but even too much good stress can overwhelm me too much. It can be rather exausting, but yeah everything gets worse when I am under too much stress.