Slim Goodbody helps children learn assertive communication skills that will help them express thoughts and feelings in an open, direct way. They will learn techniques that will get others to listen and respond appropriately to what they have to say. All of us, kids and grown-ups alike, sometimes face situations in life when it's difficult to clearly express what we want or feel. Usually this happens when we, ourselves, are feeling upset or when we feel others might be upset with us. But holding back and keeping feelings locked inside can cause you to feel frustrated, tense, and stressed out—and that isn't healthy for your mind or body.