I Am On the Computer Too Often

I have to say im on the computer 24/7, honestly it's effecting my health, i dont get up from my couch spot for more then an hour a day unless i have to go out somewhere. my living situation isnt the best, i actually sleep on the couch in my own home.
I browse the same few sites everyday multiple times even if something is happening or changed, i also do digital art so there are alot of hours spent in front of the screen everyday.