Fatcel here (~297 lbs). Just give up, otherwise, you will waste your time trying and relapsing shortly after over and over again with the time between trying and relapsing getting shorter and shorter with each time.
Why would you want to be healthier and live longer anyway? Don't forget that you're gonna live a longer life as an incel. And if you're doing this to get bitches, don't. Why would you want to date someone who only "loves" you under the condition that you look a certain way? Just cope with food until you get released from your suffering by a full-force heart attack. That's what I am doing. Add smoking to the mix to speed things up.
Honestly, if a woman loved me for who I am, I think that would be motivation enough for me to lose weight. BUT since we don't live in a fucking Disney world where the underdog always wins, that's never gonna happen.