We all strive to be healthy, but sometimes, keeping up with the latest diet trends can be as exhausting as keeping up with the Kardashians. Enter The Naughty Diet ($15; amazon.com), an easy-to-follow guide to healthy eating created by nutritionist Melissa Milne, the brainchild behind the cult-favorite blog Eat This!. In the 288-page tome, Milne reveals that her savvy approach starts with the pantry—opting for nutrient-dense foods and banning artificial ingredients. Read on to see the five items that may very well be sabotaging your diet, and what to swap 'em with. You're welcome.