It's worse than that.
When you start a diet, your body says, "A famine is here, I need to slow down metabolism and conserve fat." So it's even harder. Then when you reach your goal and eat normal food, you gain weight like a bear before hibernation.
Choices. How bad do you want it?
Right now I'm back to Nutrisystem. Since I travel a lot it's easy to take the packaged meals with me. And they are really good. The problem is, I've been down this road before and it worked then failed. I don't know what the answer is. Fat people are cursed.
Wait till skinny people give you advice. "I lost ten pounds by just using Nutrisweet instead of sugar in my coffee." Great, if that worked for me I'd be skinny too.
Exercise is a big help.