Lewis Howes has an awesome back story. According to Wikipedia, he is an author, entrepreneur and former professional arena football player. He often tells the story about how he was essentially homeless and living off of the generosity of his sister for a place to sleep. Many years later he has turned his life around and has become a catalyst for the motivational mindset movement.
On his podcast The School of Greatness, he interviews artists, entrepreneurs and thought leaders to find out what makes them tick and what makes them great. If you are looking for a positive energy boost check out his podcast and read an article I wrote last year about mindset.