Everyone knows this classic children’s story with its positive message that you can do anything, if you just believe in yourself. Wally Piper’s charming adventure about the little shiny blue engine with an inferiority complex is as familiar as Winnie-the-Pooh and Goodnight Moon. The Little Engine That Could’s cautious little heroine in steel knows that she’s the only one left to bring all the toys on the train over the mountain in time to reach the children anxiously waiting on the other side. But can she do it? By repeating the mantra of “I think I can, I think I can,” the little engine completes her task and realizes a fundamental rule of positive thinking: you can talk yourself into feeling good as easily as you’ve talked yourself into feeling bad!