* Schadenfreude: This German word describes the pleasure derived from witnessing another person's misfortune. It's the most commonly used and closest to the concept.
* Gloating: This implies taking pleasure in someone else's misfortune, often in a smug or self-satisfied way.
* Sadism: This refers to deriving pleasure from inflicting pain or suffering on others. While it doesn't necessarily imply enjoying one's own misery, it can be associated with it.
* Masochism: This refers to the enjoyment of pain or suffering, often inflicted upon oneself. It's the closest word to enjoying one's own misery.
* Melancholy: This describes a state of pensive sadness, often associated with a sense of longing or wistfulness. While not necessarily enjoying misery, it can involve a certain aesthetic appreciation of sadness.
The best word to use will depend on the specific context and the type of misery being enjoyed.