By quitting drinking alcohol
Literally the only thing I changed about my life at that time and I went from 185 lbs to 165 lbs in 3 months
I was drinking a fifth per night of alcohol that was at least 100 proof, so I was a bit of an alcoholic at the time
I quit cold turkey and within just a few weeks I started feeling a lot better overall and by about 4 months after I quit the cravings stopped every time I smelt alcohol
I've been sober now for about 5 and a half years and the weight has stayed off the whole time. I've basically been 160±5 lbs since