Master Decisions
The mental models that separate good calls from regret — sunk costs, trusting instinct, and knowing when to walk.
Already know a decisions topic you want to learn?
Start learning →Sunk cost fallacy
Spot the sunk cost fallacy — past spending shouldn't drive future choices, but emotionally it almost always does.
Whether to quit my job
Decide whether to quit your job — separate fixable from unfixable, weigh real alternatives, and reduce regret rather than chasing certainty.
Gut vs data
Choose between gut and data — when intuition is encoded expertise, when it's just bias, and how to combine both honestly.