Had a burnout at my last job when I worked myself to the bone to cope with stress, a failing relationship and not having much money. Also, made a crap ton of mistakes at work because of it.

Didn't sleep much, started skipping lunch to save what little money I had so I could commute (friends treated me every now and then, still grateful), dropped out of college because couldn't juggle work, studies and got chewed out by my family every day and just worked non-stop.

The end result was that I collapsed when I got home one night and woke up at 3 am with a severe migraine; stayed awake till sunrise then left for work again (got scolded really badly by everyone, felt loved). Fun times.