I use my own version of The Hacker's Diet, the world's most practical and flexible weight-management plan. I try to limit processed foods and stick to whole grains, lots of fruits and veggies, and natural protein sources. (Dead animal is an acceptable protein source, to me, despite ongoing moral qualms about eating mammals that I'll figure out one day. I like mammals. Many mammals are my friends. It strikes me odd to eat them, but I do it anyway, so far, because I like the way they taste. Someday ths hypocrisy may be resolved--I suspect, when I cease liking mammals.)
I exercise as much as is practical (not much, currently) and I use a nutrition tracker to keep tabs on how many calories I'm putting away.
And I feel vaguely hungry a lot. But, yanno, so do most people on the planet. It's not that much of a hardship, as long as you keep the blood sugar level. (I tend to get hypoglycemic rather easily.)
Fortunately, I really like oatmeal.