"I was at ease in everything, to be sure, but at the same tim..." — The Fall quote meaning

I was at ease in everything, to be sure, but at the same time satisfied with nothing. Each joy made me desire another. I went from festivity to festivity. On occasion I danced for nights on end, ever madder about people and life. At times, late on those nights when the dancing, the slight intoxication, my wild enthusiasm, everyone’s violent unrestraint would fill me with a tired and overwhelmed rapture, it would seem to me—at the breaking point of fatigue and for a second’s flash—that at last I understood the secret; I would rush forth anew. I ran on like that, always heaped with favors, never satiated, without knowing where to stop, until the day -- until the evening rather when the music stopped and the lights went out.