I've lost 80 lbs. and kept it off for 10+years.

I switched to a no "red meat" almost beady-eyed vegetarian diet, consisting of occasional fish (cod, tilapia, salmon, etc), occasional chicken. Other than that veggies, legumes, wheat flour items. I take lots of vitamins. I drink mostly water, coffee occasionally and fruit juice. Beer on rare occasions. I hardly ever eat sweets. I never drink sodas.

I bike as much as possible. I eat 3 times a day with 2 snacks in between. Striving for healthy ones.

Best wishes. Anyone can do it. Keep trying. Don't lose heart.