“People’s tendency to strongly prefer avoiding losses to acquiring gains.” (related: diminishing marginal utility) - Gabriel Weinberg "In economics and decision theory, loss aversion refers to people's tendency to prefer avoiding losses to acquiring equivalent gains: it's better to not lose $5 than to find $5. Some studies have suggested that losses are twice as powerful, psychologically, as gains. This leads to risk aversion when people evaluate an outcome comprising similar gains and losses; since people prefer avoiding losses to making gains." - Wikipedia (James Clear)
Gabriel Weinberg's Mental Models I Find Repeatedly Useful https://medium.com/@yegg/mental-models-i-find-repeatedly-useful-936f1cc405d --- James Clear Mental Models Overview https://jamesclear.com/mental-models https://en.wikipedia.org/wiki/Loss_aversion