100% being well rounded and open minded is primaryMostly good stuff.. When all you your stuff runs out, you better know how to improvise. Survival is more than stuff and mental attitude, it is knowing what you need and where to get it. I enjoy reading other folks ideas.. Having taught this and having friends who are currently teaching in both military and civilian markets... There are many good ideas... The more you learn, the more you know. Experience is sometimes a hard teacher
. Some stuff sounds really good, until you practice it.. I have calmed down a lot over the years, seen stuff the seemed silly , actually work.. Seen people who seemed experts fall apart.. So ,, learn as much as possible.. The most important tool is you.