Can I just break the cycle with willpower?

My binges are usually 2,500-3,000 calories in a day unless it’s eating out, then I can get up to 3,500. I follow it by taking 2 extra strength laxatives and a suppository, fasting for 18-24 hours, and doing cardio/weight lifting. Then once I feel “clean” I can eat again ON A DIET with a FRESH START. Thats my current plan. Idk how sustainable it’s about to be, but I want to do this last cleanse and be done with this cycle. If I gain any more weight I’m going to loose it.