Sure. A friend of mine was really out of shape. He started going to the gym three times a week and cut out junk food. After a year, he had built muscle and lost fat. He's now so much happier with his body. He can wear clothes he always wanted to and his confidence has soared.
There was a man who was always self - conscious about his height. But he started practicing yoga which improved his posture. He also focused on building his upper body strength. This made him look taller and more confident. He no longer felt insecure about his height. His transformation in how he felt about his body is a wonderful success story.