Let's start this beginner's guide on the TLC diet with a little mental exercise. When you go out, look around you and tell me what you see. I bet you will see an abundance of fast-food restaurants and guess what's in front of them? You guessed it...A never-ending line of people.Fast food joints are known for serving up a dish of unhealthy food – unhealthy food that people continue to consume. Why? Because they can! People choose fast food because they live a busy life and are under the impression that they can't go home and cook a healthy meal because it will take hours to do.