Welcome Nixie!
I think cold-turkey is tough and not sustainable long term - that's how it is for me, anyway. I have "rules" - black coffee, no sweet drinks, no "cheap sweets" - only excellent quality desserts on occassion and totally guilt-free, and all the dark chocolate I want. It keeps my weight down and is a habit now, no effort, and I crave less and rarely have binge problems. I would recommend cutting out one thing at a time so that you can have "replacement" habits or treats to implement