Research shows that people who keep track of what they eat and weigh on a regular basis are more likely to succeed at losing weight and keeping it off. But as the food diary of Steve Lochner shows, food tracking and weight loss is far from simple.

In February of 2012, he weighed a high of 337 pounds. But then he started tracking his eating habits using the Lose It food tracking app. Soon he became a "Super Tracker," detailing virtually every bite of food — good and bad — that he ate over a three-year period, losing more than 100 pounds. Here's how he did it.