Imagine that you've been cast away on a desert island. You live completely alone. You have enough to eat and drink. You have shelter. It may even be quite pleasant. But there's no-one else around. After a while you start to feel that some thing s you're doing may be rather strange.
One of the things you're lacking is feedback. No-one is giving you any information about how you're getting on. No-one responding to what you do. Without feedback it is difficult to regulate what you do.