>>21412750There are no 'get-rich-quick' diets that work. Even if they get Aunt Sally into that dress in time for the wedding, it's not sustainable.
You need to change your eating habits or move around a lot more. But hopefully both. The most effective diet that I have enjoyed and found long term success with is low-carb omnivore with lots of fat. You just eat fewer times per day and end up taking in fewer calories. The body burns energy more efficiently without carbs, so it melts your body fat when you're not eating. But most people are just unwilling to give up their favorite carb-heavy dishes.