Jealousy may be the most condemned emotion in modern life. We treat it as evidence of insecurity, bitterness, or emotional immaturity—something evolved adults should rise above. But jealousy is not a moral failure. More often, it is information: a painful but clarifying signal about what we long for, what we fear losing, and what kinds of lives we wish we had.

In an era shaped by social media, widening inequality, and constant exposure to other people’s relationships, wealth, and success, jealousy has become one of the defining but least honestly discussed emotions of adulthood. We are encouraged to present ourselves as self-assured and above comparison, while privately measuring our lives against everyone around us.

But denying jealousy does not make it disappear. It only makes the emotion more passive-aggressive, shame-ridden, and isolating.

There is also an important distinction between jealousy and envy, two emotions often used interchangeably but fundamentally different. Psychotherapist Jack Worthy points to the work of psychoanalyst Melanie Klein, who described envy as the desire to spoil or destroy what someone else has because the pain of lacking it feels unbearable. Jealousy, by contrast, is rooted in fear, longing, and comparison. Envy says: you have what I want, and I resent you for it. Jealousy says: I want what you have, too.

That distinction matters because much of what we call “jealousy” today is not malicious. It is........

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