Basic Chord Progressions: Handy Guide Book

"We ordinarily use mistakes to fuel self-denial, as a proof of our incompetence. But since mistakes are inevitable, try turning them instead to your best advantage. Embrace your mistakes; accept the self who makes them. This is the creative response, one that allows music to find its true shape inside you. Mistakes are your best friends. They bring a message. They tell you what to do next and light the way. They come about because you have not understood something, or have learned something incompletely. They tell you that you are moving too fast, or looking in the wrong direction."