Loss aversion
The tendency to feel the pain of losing something more strongly than the pleasure of gaining something of equal value. Losing $50 usually feels worse than finding $50 feels good.
In everyday life
Shoppers are often more motivated by 'avoid a $5 fee' than by 'get a $5 discount,' though the money is the same.
You turn down a coin-flip bet that would pay you $120 on heads and cost you $100 on tails, because the thought of the $100 gone outweighs the bigger prize.
Why your mind does this
Finishing what we start is usually a good strategy, since a brain that quit at every bump would never complete anything. Valuing what we already have, what we built and what we worked for keeps us committed and protects our resources. Losing what we have can hurt more than an equal gain helps, so caution around losses often makes sense.
How to spot it
Ask whether you are rejecting a good deal just because it includes a chance of giving something up.
How to counter it
Frame the choice both ways, once as a gain and once as a loss, and see whether your answer changes.
Habits that catch it
- Put distance between you and the choice
Sleep on it, or ask what you would tell a friend in the same spot. Strong emotion and time pressure push you toward snap judgments, where many biases thrive.