Furthermore, it elicits a sense of flight or flight, and causes a reaction, good or bad, I think. Again, it's a reaction; people in general aren't good at controlling those, nor do they last. A person can react as much as they want, but after a night's sleep, everything takes a different tone.

Our subconscious minds play a role that is probably undervalued. The jealous boss might wake up feeling relieved, invigorated.

Context also is important.