Yes:
Almost any mental state can be, we’ve learned. The human brain is spectacularly good at being self-tuned to release chemicals, on demand, that give the individual various kinds of highs.
The biggest come from activities and thoughts that most call wholesome, like love, skill, music, and such. But coming up close behind is self-righteousness! When you see someone who is indignant all the time—whether it’s your crazy neighbor or that face in the mirror—look for the flush responses and repetition rates of an addict, coming back again and again for that self-doped “hit.”
The Dish 