The best way to lose weight, if there is a general solution to that at all, is to change your lifestyle and not to go by any specific diet plan that you will abandon sooner or later to fall back to your old habits; which in turn means that even if you manage to lose weight you will put it back on once you are off that diet plan. The better solution is obviously to see which changes to your eating and exercising habits you can do that you are able to stick to permanently without feeling deprived. Ok, you might need a little bit of adjustment, but it will pay out in the long run!
The best way to lose weight is to do some planning and research first. Find out what your healthy weight should be using online BMI (body mass index) tables or calculators and compare the daily calorie needs for your current weight and the goal weight. If you adjust your calorie intake accordingly you will lose weight slowly but steadily and you do not need to readjust when you have lost those pounds. Meaning when you need 2,300 calories to maintain your current weight, but only 2,000 calories for your goal weight, all you have to do is find a way to eat 300 calories less than you do now. That is fairly easy to do, will result in a weight loss of a bit more that half a pound per week, but you will automatically end up on your goal weight if you just continue with your new eating habits. This tactic also has the benefit to eliminate the Jo-Jo effect at the same time!
You have the most control over how many calories you consume per day if you prepare your meals yourself. Yes, it is a bit more effort than just getting that take away, but you can also create tasty meals while having an eye on the actual calorie content. Fast food and restaurant food often contains a lot of sugar and fat to make the food tasting better so you would want more and come back often. But it is easy to learn to cook yourself. When time is the problem, one also has to accept that eating healthier involves a bit more commitment of putting in the time and effort to prepare the meals, but there are also some shortcuts we can take like using fresh precut vegetables or frozen ones. Get creative and start cooking more at home to save some calories and get slim while enjoying your constantly improving meal creations!