How Your Mood Affects Your Decisions

In a well-known experiment by psychologists Jennifer Lerner and Dacher Keltner, participants who were made to feel angry before evaluating risks consistently rated those risks as lower and themselves as more capable of handling them. Participants made to feel afraid rated the same risks as higher and themselves as less capable. Same risks. Same people. Different moods, completely different judgments.

Researchers call this "incidental affect" -- emotions that have nothing to do with the decision at hand but warp it anyway. And the most unsettling part is that participants in these studies don't believe their emotions are influencing them. They think they're being rational the whole time.

What each mood does

Anxiety makes everything look dangerous. You overestimate risk, fixate on worst-case scenarios, and gravitate toward whatever feels safest, even if safe means stagnant. Anxiety is the status quo's best friend. It makes staying put feel wise when it's really just fear wearing a sensible hat.

Anger does the opposite. It inflates your sense of control and competence. That "I'll show them" energy can fuel genuinely bold moves, but it can just as easily fuel reckless ones. The angry brain underestimates consequences because it's too busy feeling powerful.

Sadness creates a pull toward change -- any change. You undervalue what you have and overvalue anything that feels different from this. Sad decision-making is behind a lot of impulsive purchases, abrupt breakups, and dramatic career pivots that feel urgent in the moment but aren't.

Happiness makes you generous, trusting, and prone to saying yes. Which is lovely until you overcommit, get taken advantage of, or agree to things you can't sustain once the good mood passes.

The two-word intervention

Before any meaningful decision, try this: name it. Not "I feel bad" -- that's too vague to be useful. Try "I'm anxious because of that conversation with my boss this morning" or "I'm irritated because I slept four hours."

Psychologist Dan Siegel calls this "name it to tame it." The act of specifically labeling an emotion creates a small but real gap between feeling it and being driven by it. Neuroimaging studies show that verbal labeling of emotions actually reduces amygdala activation. Naming the feeling literally quiets the alarm system.

The 24-hour rule

If you're in a strong emotional state -- high or low -- and the decision isn't genuinely time-sensitive, wait. Sleep on it. Let the weather pass.

Most regrettable decisions aren't caused by bad information. They're caused by bad timing -- choosing during emotional intensity that doesn't represent your actual values or your settled judgment. The decision will still be there tomorrow. Your perspective won't be the same, and that's the point.

The nuance

None of this means emotions are noise to be eliminated. They carry real information. Anxiety might signal a genuine risk. Excitement might signal genuine alignment. The skill -- and it is a skill, one that improves with practice -- is learning to distinguish between emotions that are about the decision and emotions that just happen to be present when the decision arrives.