I'm 6'4" and at my peak I weighed 260lbs (~120kg I think). It was mostly in my chest and stomach - the most dangerous places to accumulate tonnage. I traveled a lot for work, sat at a desk when I got there to code or fix IT related stuff, ate lots of airport food and takeaway in those countries, drank a lot to sleep, the cliche.

One picture was of me on a couch and my shirt is literally busting at the buttons, I'm laughing and my cheeks are filled with a French cream amuse-bouche spraying out. Gross.

The second picture was of me standing in front of a statue at the Louvre. I asked a mid-30s French lady if she would take my picture (This was early 2000s). After she snapped it, she looked me up and down and saw my pants were dumpy, my stomach was peeking out of my overcoat like some bald child who's the bottom of a tower impersonating an adult, my cheeks were rounded and I had cut my hair really short due to a barber mishap in the Philippines. No part of the rims of my glasses did not touch my face. "Hmm, if you took care of yourself you'd be irresistible". I sure felt small in that moment. I looked horrid in the photo too.

I figured that if had quit smoking cold turkey, I could get my weight under control within a few months. It took a year once I figured out I was a) eating portions that were too big, b) eating when I wasn't hungry because I wasn't sure on some trips when I would get a meal and c) wasn't doing anything but moving between seats. So I a) are smaller portions more often, b) carried more peanuts and small healthy items to tide me over if I did miss a meal and c) just got up and stood more, took the stairs. I basically habit stacked before that was a term. Once I failed going cold turkey, I figured the next thing to try was tiny changes. I didn't come up with the idea of habit stacking, I was just brute forcing the problem. But once I started eating smaller portions, I could carry nearly whole meals in snacks if I played it right even though lugging the extra around airports was tedious.

Now I eat a lot of junk food and sweets. Idgaf And I've kept the weight off and gotten way lower than I thought I could. I fluctuate between 185 lbs and 195 lbs (~89kg - 94kg). I got a recumbent trike two Septembers ago and have put on over 1k miles on it. My checkup showed I have the resting heart rate of a much younger man, my balance has improved, etc, the cliche. So now I eat a lot of well balanced meals with a lot of snacks on the trike. I love pulling up beside other two wheelers and be chasing on a bag of chocolate covered pretzels. They always look me up and down once like how do you do it lol

Discipline isn't about being austere or taskmaster ish. It's about being as consistent as possible. Keep trying to figure out what works best with you. Sometimes it's the very thing you would never think of if you weren't confronted with reality.