Another New Years, another resolution to lose weight has fallen off track. In fact, 80% of those who started a diet at the beginning of the year have already stopped. But there might be a solution!

Author and former "Celebrity Fit Club" diet expert Dr. Ian Smith says he can get you back on track. In his new book “Shred: The Revolutionary Diet,” Smith promises to help people lose four inches and two clothing sizes in six weeks. This morning Dr. Smith explains his plan to Soledad O'Brien on “Starting Point.”

Dr. Smith says the philosophy of this book focuses on two components. The first focuses on meal spacing, where a person should eat every three to four hours, four meals a day, three snacks, small meals. This ultimately “keeps your metabolism revved up and prevents insulin spikes that cause weight gain,” Smith says.

The second element of the diet revolves around “diet confusion,” which he says is borrowed from “muscle confusion where you change the type of food you eat and the volume to keep your metabolism revved so you’re not always eating the same foods.”

To truly put his diet to the test, Dr. Smith had 5,000 people try the “Shred” diet and found that the average weight loss over six weeks was 20 pounds.

“You can lose weight without exercising but if you want to maximize your weight loss and beyond that and live longer you need to have physical movement – about 35 minutes, four days a week,” Dr. Smith adds.

Dr. Smith says people are able to stick to “Shred” because “its not a diet, it’s a lifestyle plan.” He adds that the diet instructs you to “Eat good, healthy food that’s regular food [and] you don’t always eat perfectly.” In fact he says you can have bacon, pancakes and pizza on this diet but in moderation. He notes that the diet is also flexible for diabetics, vegetarians, vegans and those who have mental conditions or food preferences.