I have never had a hangover induced by alcohol, but I know the experience of an emotional hangover after a bout of extreme, irrational emotion. My throat is sore from yelling, my emotions are subdued, my eyes feel newly bathed in tears, but no new tears will fall. Sometimes I just itch for a fight and usually I want a verbal jousting match, but no one wants to take the bait and play by my stupid rules... They all just want me to start treating people they way they deserve to treated with dignity and respect all of the time, not just for most of the day.
Emotional hangovers help you realize in the clear light of day that your patterns of behaviour cannot go on, and must not continue. But to stop them you need the help of a higher power... one who knows how you roll, and won't let you get away with staying in your stupidity and bad ways of relating. One thing I have to learn is that correction is not condemnation or even accusation. Wise people know this, and they listen and they usually don't even raise their voice at all, and they definitely don't change their tone to one dripping with negativity and sarcasm and drenched in angst-filled irrationality.