Do you think the problem started at your youth stages as far as the habits taught to you by your parents??
For me I was overweight in high school but I didn't become ridiculous with it till I got to college. My parents didn't teach me any of it. When I got a job at 16 I bought my own food and ate whatever I wanted. I spend the bulk of my 20s not eating "real food" at all.
I actually do have healthy habits my parents taught me like mostly drink water and I eat a lot of soy meat products to this very day. You can't eat nothing but processed food in the microwave and snack products and not blow up and I got to 280 at 5'10 by the time I finished college. One day I work up and decided I was gonna do whatever it took to get my weight handled. That day at my size I cut my calories down to 1800-2000 at a hard limit which I maintained for almost 5 months. I pretty much never exceeded 2000 calories with was a bit below my BMR. I went to the gym hard and spend hours on the cardio equipment and a bit of time in the weight room and I got down to about 200 pounds. People kept telling me I looked good at that weight and I should stop so eventually I abandoned my goal of getting down to 180 and just stopped.
After that my weight over the span of a few years crept back up to about 245. I'm back in the gym now something I stopped doing when I got busy with work after I got a different job. I've since lost 19 pounds over the last 30 days. Losing weight again has been very easy. Easier than it was the first time. It was like in my mind I walked into a room and flipped a light switch and that was it. I've been locked on again. I will admit I eat about 2400 calories a day now instead of eating like a woman but I'm matching my pace of weight loss from back then.