I've tried to lose weight forever, am finally losing at 50 y.o., have gone from about 15 stone 4 (so about 214 pounds) to now 14 stone 2 (about 198). I managed to lose about 10 pounds of that in first 4 or 5 weeks, then stopped dead for 4 weeks, am now dropping again. I am 5ft 11.
The way I did it is to cut out as much carbs as possible (like bread and pasta) and only have 1 meal per day (smaller portions size too) of like chicken cooked in oven, or a steak, with mushrooms, broccoli, and maybe a couple of (like literally 2) small baby potatoes. AND eat it earlier in the day, no later than 2pm.
[breakfast like a king, lunch like a prince, dine like a pauper]
So eating healthy food, but smaller portion sizes and earlier in day.
At first for like a day and a half it was torture because I felt so hungry my stomach was aching, but after that you don't even feel hungry, I reckon I eat about 1400 to 1800 calories a day, I drink a lot of coffee with milk, I'm going through avout 400 calories of milk a day eek!
Then when I plateaued I had a spell for a few days where I went out for a meal, and had a couple of days where I ate a chocolate bar, snadwiches, bacon sandwiches, etc, and ironically then after eating carbs again my weight started moving down again.
I think I'd gone into starvation mode.
Sadly my waist size has hardly budged, maybe gone from 42 to 41.
Not done any exercise at all.