Sounds like the "Penfield Mood Organ"[0] from Philip K. Dick's Do Androids Dream of Electric Sheep. Characters "dial" emotions, from basic to extremely specific (e.g. "481. Awareness of the manifold possibilities open [...] in the future", or "888 [...] The desire to watch TV, no matter what's on it")
[0] https://en.wikipedia.org/wiki/Penfield_mood_organ