Why did Kierkegaard write about anxiety?

In 1844 he published The Concept of Anxiety under a pseudonym. The book was unlike anything written before about the emotion. Where others treated anxiety as a symptom to eliminate, Kierkegaard treated it as a signal — one that revealed something essential about the human condition.

His key move was to link anxiety to freedom: "Anxiety is the dizziness of freedom." When a person stands at the edge of a cliff, the dread they feel is not only fear of falling. It is the terrifying awareness that they could jump — that nothing external prevents it, that freedom is real. The dizziness is the vertigo of genuine choice.

How does this differ from fear?

Fear has a specific object: a dog, a test, a conversation. You know what you fear and when the threat passes, the fear passes.

Anxiety is objectless — or its object is existence itself, possibility itself, freedom itself. It cannot be resolved by eliminating a specific threat. It is the cost of being a free being who must choose without certainty.

What does this mean practically?

That anxiety cannot be fully cured without eliminating the freedom that causes it — and we would not want to do that. The healthy response is not to escape anxiety but to understand it as a teacher: what is it pointing toward? What freedom is it asking you to exercise?

Modern psychology has largely converged on this approach — exposure therapy and ACT both involve moving toward anxiety rather than away from it. Kierkegaard reached this conclusion through phenomenology a century and a half earlier.