It's all relative.
You get hot chicks every day, but then for some reason you don't get any action, then you are less happy than the ugly guy who didn't get laid for 1 year but now he had luck
You had been making $100k per month but then you suddenly dropped to $35k per month..which is still great..but I bet that the guy who had been making $3k per month but now he increased his profits to $5k per month, will be happier than you.
Same goes for many other areas.
The more you get, the more you demand from life.....