Ich habe genug

I can not stop listening to "Ich habe genug," from a Bach cantata (BWV 82). Over and over again. I can't get enough. But "Ich habe genug" means "I have enough." It is a small step from that to "I have had enough." One is about contentment, and the other expresses the wish for contentment. But if I wish to be content I never will be. I have to stop wishing in order for it to be so.