Hi OP.
My 'lightbulb' ish moment came last year, when I was caring for my dm who was very ill. First, seeing her so very ill made me aware of my own mortality, and also, the surgeon told us that had she not been in such good health (prior to sudden illness), she'd never have survived her surgery and subsequent treatments.
Then, I had a go, during some bored hours waiting in hospital again, on a weight machine and blood pressure/ heart rate monitor. The results were grim. Really not good. I felt despair, misery and wanted to go and buy a tonne of chocolate to eat. But I didn't.
During the intense hospital visiting period, I was not able to find the time to cook and eat at home, so bought practically all my meals from the hospital canteen and also the M and S food shop onsite. So for 3 weeks stright, I ate a completely calorie controlled diet. It was mainly salads/ sandwiches and fruit. Also crisps as treats and skinny lattes from costa. Sounds unhealthy perhaps, but it really wasn't. I never went above 1200 cals per day, and didn't eat much sugar. The downside was, it was expensive.
I also started walking more, got off the bus earlier etc. Started getting the stairs, not the lift automatically. I started logging into MFP- it was very motivating.
I lost over a stone in a month like this. Then when things got back to normal again, and mum came out of hospital, things started going wrong again. So I had to start really regulating portions again. That's been the hardest thing. I'm still losing weight, but more slowly now. It's hard trying to juggle life and cooking/shopping for the family.
Can you try MFP or counting calories like I did for a bit? I found it easier than I'd have thought possible to count calories, and it worked for me. But I do understand that it seems very off putting. Best of luck.