Like all good advice this one is repeated again and again. I think I heard it for the first time 10 years ago from Brian Tracy : http://amzn.to/zv02VR http://

Like all good advice this one is repeated again and again. I think I heard it for the first time 10 years ago from Brian Tracy : http://amzn.to/zv02VR http://amzn.to/zv02VR Although I am sure that others mentioned it before him. * Gratuitous affiliate link included.