How to have an obsession (and what happens after)

  Guyss.. Do you ever really really like something and then you can't stop?? me too. Apparently that can be called hyperfixation but I have never gotten a diagnosis for anything so I will just say that I have weird periods in my life where I consume a certain media and get overly happy anytime I see it and change all of my pfps and stuff to it and also get mad when my friend likes it too much.. I legit love mouthwashing right now, sometimes I kinda hate liking stuff that much because it gets hard to watch anything else that isn't about it.. I mean mouthwashing is a good game, I mean it got a steam award... Before mouthwashing it was Percy Jackson and the list goes on and on. SOOOO... yeah that's all I had to say it's just weird I mean it doesn't weird me out when other people do that I just judge myself because why not? Anyway, when I'm not obsessing over something I kinda just lay in bed all day since I won't have anything to do.. send help!! If this is happening to anyone else (I KNOW IT IS) please help!!