My own advice:

The diet I’m on, which has lost me 36 pounds (196 to 160) and counting since early April, is simple calorie restriction - I try my best not to go over 1500 calories/day, and if I do go over, I try to make up for it by going under on following days until things average out.

Every time I’ve tried this diet or similar diets, I’ve had great success, as long as I’ve meticulously tracked and wrote down how many calories I ate each day. The times I’ve tried this diet without tracking have all ended up failing, even when I “tried” sticking to it for months. The moment I start writing numbers down, things just fall into place. So for me at least, that’s the key.

Some notes:

• Over the last 127 days my actual average calories/day has been 1472/day
• I try to avoid meals where counting is very difficult or impractical. That means I try to avoid going to restaurants that don’t post calories and I’m not big on “real” cooking. If I do have a meal where a good count isn’t possible I try my best to overestimate - usually with 2500 or 3000 depending on how full I am since it’s really hard to eat more than that at once. I find it very difficult to go to most restaurants without getting more than 1500 calories, also, so I don’t eat at restaurants all that often anymore. Fast food places like McDonald’s are actually some of the easier options to work with, though.
• I’ve made little to no effort to eat healthier - just less. I can have a blizzard from Dairy Queen if I want, but that’s 1100 calories and then I’ve only got 400 left for something else. I have mastered making delicious ice cream that’s just 300 calories/pint though. In practice I usually eat processed foods from a can, box, or bag that you just need to heat up or follow the instructions on the box for.
• A scale is essential for getting accurate calories out of things like butter, milk, ketchup, ice cream ingredients, etc.
• In general meats are a pretty poor choice - compared to other foods they make me a lot less full compared to how many calories they take up. I can eat 8 hotdogs (without buns) and fill up my daily calories in that one meal, and still be hungry - or I can have two cans of spaghettios (580 calories total), and be so full I almost can’t finish.
• For me at least, after the first week or so I just stop feeling hungry in general most of the time. There are occasionally days where I only eat because I know I should, rather than because I got hungry.
• When I’m on this diet, I basically never get heartburn, even after a day where I eat something that would usually have given it to me badly - probably the nicest part of all this.
• Despite what the post says, I eat basically no fruits or vegetables in my day-to-day life.
• In the past, I’ve incorporated extremely heavy daily exercise into my routine as well - I’m talking multiple hours a day, every day, for at least two months. While it did have some noticeable benefits like a very noticeably lower resting heart rate and increased strength, it had basically no visible effect on my rate of weight loss - looking at the graph, you couldn’t even tell which portions of the diet were subject to heavy exercise vs. heavy leisure. The lesson learned is that diet is far, far more important than exercise - you can offset an entire workout with a single cookie.
• When I’m not making any dieting attempts at all, I’m a huge glutton. I’ve never gotten over 200 pounds, because any time I get close I start doing this diet - but if I ate the way I wanted to all the time, I could easily weigh 350+ pounds. I can very easily eat single 1200-2000 calorie meals multiple times a day. I’ve yo-yo’d a lot in the past few years but I’m hoping to more or less keep things permanently under control this time - once I get to 140ish I plan to raise my daily calorie allowance to the point where I maintain, rather than gain or lose, over time.

An added bonus of writing things down is getting to graph things too!

Note that I’m not claiming this is healthy. Just effective. Anyone can lose weight eating nothing but chocolate cake, as long as they eat sufficiently little. It doesn’t mean you won’t die from it.