Ten Times Happier: A guide on how to let go of whats holding you back from the bestselling author of TEN TO ZENNow you can with TEN TIMES HAPPIER by Owen OKane, psychotherapist, former NHS Clinical Lead and Sunday Times bestselling author of TEN TO ZEN. Modern life is a minefield for stress. Whether its juggling work, relationships or money, we often get stuck mindlessly obsessing about all the wrong things, not knowing what to let go of.