I weigh 80kgs (176lbs), I was 73kgs (160lbs) 8 months ago. I don't think i need to lose weight though, I'm pretty well built and go gym every 2nd day, play Rugby and eat well. I think most the weight i put on was from muscle tbh.

I used to be 14kg (30 pounds) overweight back in 2012-2014, but I managed to shed that over about 6 months and now I've been in my optimal weight range for five years.

The biggest things that helped me were cutting back on sugar, and replacing snacks between meals with tea/coffee. 

You guys are doing this weight loss thing all wrong when in reality it's very simple. The most efficient way to lose weight can be summed up in 1 sentence.

You eat the food, you lose the weight.

I’ve tried stuff like you described many times. Always lots of results at first and then nothing. I did lose about 70 pounds this summer, but I did so with portion control and exercise. I was at 266 back in May and now I’m down to 194.

Damn now it's time to get the ladies!  If I go under 200 lbs I look like a crackhead.  215 to 220 is my optimal weight for my body type.

All I had to do was to completely eliminate sweets, crisps and fizzy drinks from my diet. I lost 10 kg in first 3 months, but I noticed that I was loosing less and less each month. So, to sustain weight loss, I've started to cycle to work (unless the weather's crap) and jog 3 times a week (5km per session). In total no more than 4 hours per week of extra physical activity. One year later and I'm healthy 75 kg (from almost 100), with BMI score of 24 (previously 32) and it's going to stay that way. This isn't a diet, it's a lifestyle change. I still have occasional cheat day, mostly during a night out or when I go the cinema, but no often than twice per month. And honestly, this isn't as hard as I thought. The hardest part was to commit and move my lazy ass. Once you do your first step, it's getting easier with each day, especially when you see results.
ps. and don't even bother with quick fix diets or anything super drastic. In a long term this stuff never works. Trust me, I tried. What's worse, because how drastic those method are, they leave bad taste in your month and discourage you from any future commitments. .

How tall are you? I'm 1.9m  and 97kg

Just over a year ago, I lost a lot of weight by restricting my eating to within an 8 hour period, the other 16 hours I would only drink water. Each week I was noticing weight loss. I didn't weigh myself because I didn't want to deal with the inaccurate, cheap scales I have and in my experience, knowing my weight is just demoralising. But I was going down belt notches and clothes were getting too big for me, plus I was getting more energy. After 3 months I was feeling great.

It's a shame I got too confident in my ability to lose weight and just put it all back on.

I had found my weight crept up over a number of years, to get over 250 lbs. It was going to spiral even worse out of control, as I was looking at approaching 300 lbs if I didn't make changes.  I did.  I am now below 190 lbs.  I am looking to get around 175 lbs that I was around high school.  I am going on about a year down from my top weight.  I started partly late September 2018 and kicked in the full process close to November 2018.  I should naturally be thin.  When I was in the Army, by weight got below 150 lbs and didn't put on muscle.  How I put on that much weight is a mystery.  I should be thin. 

I did not work out at all or go to a gym.  I did a bit of walking.  I am now walking several miles home from work during week days.  The basis of what I did is following:

* The basic premise of what I did that works is that you eat carb level to match your lifestyle and less if you need to lose weight.  If you work out more, eat more carbs.  Eat sufficient protein.  It is Ketoish. Where I am now, I am having more carbs, but trying to eat the right types.  I walk miles so I can afford it.

* I did mostly Keto, with some differences.  I ended up eating pro-Keto food, and restricted food that wasn't Keto.  In this, it was meat and green vegetables, but low in starches.  It was also avoiding eating sweets in there.  I did ketosis and had to manage it.  Rather than percentages of this or that, I just restricted foods.  I also had a focus on not eating sweet tasting anything and eating more bitter.  I found my issues with weight loss came from what I didn't like to eat as much as I do.  Having a sweet tooth is a problem.

* I also went nearly Vegan for Lent and had to shift.  I still tried to avoid sweets, and wanted to find plant protein.  I did still lose weight that way, but now I am off it again.

* Where I am now is to try to eat complex carbs to some degree, but restrict sweets.  I will do cold black decaf coffee, for example.  I eat bitter.  My results are based around taste of food and the scientific fact if you eat food you find yucky, you will eat less of it.

Your mileage may vary on this.  I still have more to go.  It is a challenge.    Congrats on your weight loss.  Roll with it more.  Expect setbacks.

This is also something for people to watch out for if you diet and end up restricting like fats or carbs or whatever. I cut out grains and wheat.  I found I had problems processing gluten for awhile.  Vegans will find they have problems processing animal products.  If you leave anything out for awhile, your body has to get acclimated again.

I'm not really overweight, but I am trying to lose excess weight and get into shape. What I'm doing is quite different than what most of you are doing.

What I do is I'm eating more times a day with smaller meals, limiting the types of calories I take in. Carbs are okay, but I focus more on protein as I am also going to the gym and protein is an important part of exercise. I use an app that tracks calories, and I weigh up most of my food (or check volume) before I eat it, and I log it.

I also eat before and after a workout and make sure I limit sugar intake. Most of my sugar comes from whole fruit. I have a baseline of how many calories my body burns daily and I aim for more calories burned than consumed.

I've noticed that someone in here said they're changing by eating fewer times a day or not at all, and I'll just let you know that doing that is likely holding you back on losing weight as your body goes into something called "starvation mode" to fight back the reduced caloric intake since it doesn't know when the next source of energy is coming.