Mind in dantien is not easy: our modern minds have been debilitated by thinking and are no longer able to countenance, let alone generate, spirit. Mind in dantien is the mood of a warrior: ruthless, detached, alert, evoked by contemplating death: feeling its sobering presence and inescapable inevitability. Ruthless means without self-pity; detached means alone and happy to be alone; alert means awake and ever vigilant. Together these create the positive affect we call joy.