The people who survived the sword found grace in the wilderness, the people's of Israel when it went to find its rest. And we usually call it the “will to survive” although you might call it “attitude” just as well. This basically means that, if you do not have the right attitude, you may still not survive.
And then, why would 21st centuries mankind's need to learn to "survive" in today's world?
Generally, I illustrated in teaching course format, as below:
01. Requirements for Survival
02. Survival Tools
03. Water
04. Fire
05. Shelter
06. Core Values
07. Challenges
08. Signaling
09. Recovery
10. Navigation
11. Traps and Snares
12. Games
13. Food
14. Tools and Equipment
15. Tracking
16. Medic
17. Weathers
18. Disaster
19. Miscellaneous