That happens to me a lot. It is mostly a nice feeling, in my opinion. It's probably why I tend to read more slowly towards the end of a good book or play more slowly towards the end of a good game.

Usually I just take the next few days to sort of reflect on it before doing anything similar again. Re-reading/playing/watching something right away doesn't work for me to get rid of the feeling, though if I like something a lot I will usually do so every now and then - just not right away.

Talking about it and looking for things related to it are good things, in my opinion - although for the books I don't usually have many people to talk to. That's mostly for games and movies, for me.