An effective diet means finding strategies that work for you as an individual. For me, eating carbs (except for fruit) leaves me craving more so I avoid carbs all together. That approach works for me. For another person, using your favorite carb as a reward for progress, may be a better plan. The point is, you have to figure out what works best for you.
Being consistent with my diet has benefited me. For Example, I always select a pre-cooked organic meal from Whole Foods and enjoy snacks such as cheese and yogurt. Introducing new flavors, condiments or spices can make food more interesting for you to eat. Do not let small setbacks get you off course. Tomorrow is a new day. Take charge and challenge yourself daily!