Bipolar by Koehler is a great read about a man that never gave up. With great gifts come great responsibility (quote from Spiderman). John Koehler is a unique gifted man who is humbled by seasonal depression. The first story of three elaborates John’s frustration as well as his tenacity for solving his own equation. It is hard not to be inspired by his journey. For those that suffer like John, it offers guidance and wisdom.