How to get over this addiction?

When I first tried it i was just trying to see what it felt like for my vagina to get licked, so i tried getting my dog to lick it. She wouldn't lick it until i put a bit of peanut butter in it. And it felt so good, it even gave me my first orgasm! But it's starting to be an obsession, i do it 5 or 6 times a week and im getting worried that it's really sick and gross. Any tips on how to get over the addiction?