Don't eat this, only eat that, don't eat at these times, only eat at these times, fast, don't fast.
It's been going on for decades, and it's both silly and counterproductive.
There is no easy shortcut to losing weight and being in good health. It takes discipline and dedication, and a complete lifestyle change. Yes, it's hard, but we just have to deal with that, instead of thinking we can somehow cheat our way to it.
Eat less, move more. I'm not going to try to get more detailed than that, because then everyone will just start nitpicking, based on their own pet theories.
"Move more" is the most important part. Almost everyone in western society is moving way too little. Our sedentary lifestyles are killing us. Stand up at your desk. Go for a walk instead of watching a movie. Start riding a bike. Take the stairs. Doesn't matter, just move.