What is going on when I do something but my heart isn't in it? Listener question

What does "heart not in it" or "going through the motions" mean if there is no self?"to do the base functions of an activity without much thought or interest or enthusiasm" also to do it without commitment or insincerely. If emotions are continuing to shift, is this just the system doing what makes sense without the emotions ending up as interested or pleasurable? I do dishes every day, I wouldn't describe it as going through the motions, and also wouldn't say it's interesting or that I do them enthusiastically.