No fearful, terrified, or desperate soldier wins the war, only the brave, resisting and smiling triumphs, don't you believe me?! Ask any doctor about the feasibility of the psychological state on treatment. He will tell you that it is the most important factor in determining the outcome of the war.
"Non-medical advice" is a form of advice given to people who are suffering from a serious illness. The advice is not meant to be taken as medical advice, but as a piece of advice to be passed on to others.