I refuse to buy the candy at the register, no matter how badly I want it. At brunch, I substitute fruit for the toast. They're seemingly small changes, but in totality they make a huge difference.
Because I grew up eating dessert after dinner, it was strange, at first, to avoid sweets so much. But the more I did it, the better I felt. I use that as motivation when sugar cravings are strongest.
I'm a simple man who wants a simple plan. I just decided to break the cycle. Breakfast became an apple rather than a donut. Quinoa replaced rice during lunch or dinner. Fruit is a natural source of sugar and comes with a full spectrum of nutrients, like fiber, which helps your body process sugar. Sugar from a strawberry is not the potent, distilled version found in, say, strawberry Skittles.
Reach out to a friend when you're struggling. Being open and honest with my girlfriend throughout the process was a huge help for me.
Know that there will be setbacks, but they don't doom you to failure
In March 2014, I quit nicotine. I had tried before and knew it would be hard. Nervous to fail, I gave myself some pep by eating any junk food I wanted. I was gluttonous. I knew I was gaining weight, knew I had gone back over 300lbs, but told myself it was all to save willpower for nicotine.