I've manipulated my weight by over 30 pounds down and up since the beginning of the year. I've done it on a schedule based on calorie intake and burn measured carefully. I average 3.5 workout hours a week. I've spent just as much time eating over my calories burned as I have eating under. And I'm not eating superfoods or no carbs, or no fat, or whatever other fad... I'm eating pretty much the same stuff I always have just on a budget. My weight change has been impossible to detect day-to-day on the scale it's been so slow yet the total impact has been huge.
For years I believed the calorie thing was bunk and indeed I managed my "weight" but got fatter and fatter with the scale largely in the same range. When my weight would go up I'd cut back and lose weight... but it didn't impact my physical dimensions. So last year I said that was it and decided to get serious.
Losing weight is a mental task. It's the time and consistency that it takes that is so brutal. Society suffers from a negative feedback loop where everything promises quick results, and when you don't get them, it feels impossible. The reality is losing a pound a week of fat is rapid weight loss. And when your weight fluctuates by a few pounds a day it can take a long time for readily apparent results to show up. But if you stack up 26 weeks of weight loss you will feel like a champion and it didn't take superhuman effort on any given day to do it.
Start today and by the end of the year you'll see major changes. Or you can keep doing what you are doing thinking the calorie math doesn't work and you will probably keep on the same trend line.