Looking beautiful isn't just about what you apply on your face. It's the little things you do that matter. A combination of a good diet, exercise, healthy habits, discipline, dancing etc. is what my beauty routine consists of. Also, I have no bad habits; I don't drink or smoke. All these contribute to me being fit and looking good.
If you want to become physically stronger, you'll need healthy habits - like going to the gym. You'll also have to give up unhealthy habits - like eating junk food. Building mental strength requires healthy habits - like practicing gratitude - while also giving up unhealthy behavior, like giving up after the first failure.