writing about obsessions.

first of all, what is an obsession? for me is something that you like so much and you cant stop thinking about, it can be some ideas or thoughts about a particular thing. there are different obsessions, they can be bad or good.
the scientific definition of obsession: Compulsive preoccupation with a fixed idea or an unwanted feeling or emotion, often accompanied by symptoms of anxiety.
some types of obsessions: those people who wash everything: because they dont like dirty things and they hate pollution. and there are the others who wash their hands till they bleed
the collectors:  people who like to collect things and they have big collections of stuff that are useless.
the perfectionists: people who have to have everything in a perfect order, they dont like their stuff to be in a wrong place and they try to do everything as perfect as they can. some time later this obsesion starts to be irritating.
checkers: people who check their properties again and again to have everything under their control
obsessed with food: people who eat and eat because they love to. and the other kind is the ones that do an strict diet.
obsessed with physical image: those who want to have a perfect body and do crazy things to have it, like consume steroids and stop eating to look perfect. 

you may ask yourself, who can go under obsessions? I think everyone can go under bad obsessions or good too, for example, people who love to smoke and have to do it because if they dont they feel like they're dying. or maybe people who love tatoos and have them all around their bodies. everyone can have an obsession, we only have to take care of ourselves to dont get in a bad one.