It's hard to determine when enough is truly enough. I'm always trying to keep my words measured. I try to not say too much when my temper starts flaring up. Then again, if I don't say enough then my feelings won't get out when I need them to.
We're supposed to eat enough (not too much or little), work out (but not too much or little), sleep (but not too little). Most of the time its hard to be the arbiter of balance. But it's worth the struggle to get there.