At least that’s what Judith Beck says. She’s a psychologist who’s written a new book called “The Beck Diet Solution” and she says the book is enough to help dieters swear off their Doritos once and for all. That’s because it focuses on the psychology of permanent weight loss.

We read about it in Newsweek magazine and it doesn’t tell you which foods to eat or not eat. Instead, it tells you how to stick to an eating plan of your own choice, for good, by changing the way you talk to yourself when confronted by temptation. The diet plan is based on what’s called “cognitive therapy” or CT, which has been used for decades to battle depression, anxiety, substance abuse, and insomnia. It’s all about changing the way you think about yourself, the world and the future – and in this case, food.

So how do you begin? The first day, write down a list of reasons you want to lose weight. You’ll read that list twice a day for a long time to rehearse those ideas. Then, down the line, when you’re tempted by a pint of Ben & Jerry’s, you can say to yourself. “Yes, I want that Chunky Monkey, but I’d rather lose weight so I can have more energy.” – or whatever your reasons are.

Beck also says you should never eat standing up. Why? Because food you eat standing up is food you didn’t plan to eat. Like snacks at parties. But Beck allows up to 300 calories a day of whatever you want – a brownie or cheese puffs. Why? Because it changes the way you think about food. If you know you can have candy at some point during the day, it’s easier to say ‘no’ when you’re tempted. Because every time you give in, you make it more likely that you’ll give in in the future. But every time you resist, you make it more likely that you’ll resist in the future.

She also advocates eating mindfully – really savoring the taste, smell, color and texture of food. Because when you do that, you naturally eat less and feel more satisfied. Want to try it? The book is called “The Beck Diet Solution.”