Mindéreglad is a psychic-state of mind where the sub-conscienceness is at the state where the person/animal was truely happy. The conscienceness is at the state of mind where the person/animal feels like every thing is great and it can't get better. The sub-conscienceness then starts too feel this happyness that it once felt. Later (maybe years) the conscienceness begins to get depressed, because the sub-conscienceness wants to feel the happyness again, but aren't able to because the conscienceness has supressed that feeling.