User blog comment:Kittyfire/Random Topic Blogging!/@comment-3006892-20111206235125/@comment-3006892-20111208201801

Obsession cycles...basically, you get hooked onto something, maybe a book or TV show, and you can't not have it in your life or it'll make your brain jam up and make you real upset. And your obsessions may last for years, or maybe only a few days, and then it's on to something new...

And impulses are the first thing your body or brain wants to do, even if it's usually not a good idea.