I cut myself for attention, and I really want to stop(very very very long question, I'm so sorry)?

Cutting yourself for attention isn't the best way to get attention, it'll just cause more health problems, and the scars it will leave will not make you feel better about yourself, I wouldn't think. And if you're self conscious about your weight, maybe start eating less and exercising more? Because gagging yourself with a toothbrush and trying to vomit won't help anything either.