The seven day mental diet by emmet fox 2 the seven day mental diet dr emmet fox july 30 1886 august 13 1951 dr emmet fox was a new thought teacher author healer and minister his aim in life was to encourage all people within and without the church to know god and develop their god like attributes. Day mental diet for a full week is that emmet fox was absolutely right when he said the seven day mental diet is not complicated but it is very difficult don t be discouraged by that statement the eight guiding principles include the missing links that will mean the difference between failure and success