“A despairing man is in despair over something. So it seems for an instant, but only for an instant; that same instant the true despair manifests itself, or despair manifests itself in its true character. For in the fact that he despaired of something, he really despaired of himself, and now would be rid of himself. Thus when the ambitious man whose watchword was Either Caesar or nothing does not become Caesar, he is in despair thereat. But this signifies something else, namely, that precisely because he did not become Caesar he now cannot endure to be himself. So properly he is not in despair over the fact that he did not become Caesar, but he is in despair over himself for the fact that he did not become Caesar. This self which, had he become Caesar, would have been to him a sheer delight (though in another sense equally in despair), this self is now absolutely intolerable to him. In a profounder sense it is not the fact that he did not become Caesar which is intolerable to him, but the self which did not become Caesar is the thing that is intolerable; or, more correctly, what is intolerable to him is that he cannot get rid of himself. If he had become Caesar he would have been rid of himself in desperation, but now that he did not become Caesar he cannot in desperation get rid of himself. Essentially he is equally in despair in either case, for he does not possess himself, he is not himself. By becoming Caesar he would not after all have become himself but have got rid of himself, and by not becoming Caesar he falls into despair over the fact that he cannot get rid of himself. Hence it is a superficial view (which presumably has never seen a person in despair, not even one’s own self) when it is said of a man in despair, He is consuming himself. For precisely this it is he despairs of, and to his torment it is precisely this he cannot do, since by despair fire has entered into something that cannot burn, or cannot burn up, that is, into the self.”

Søren Kierkegaard

(As taken from “The Sickness Unto Death”, 1849)