Tony Blauer discusses psychological aspects of preparedness:

1. Golden Rules:
   1. Acceptance
   2. Get Challenged
   3. Don’t Stop Thinking
2. Create A Directive
3. Never Telegraph Preparedness
4. Identify Your Natural Stances
5. Identify Force Continuum (if possible)
6. See Your Strategy With A Successful Resolution
7. No Fear
8. Stay Detached
9. Closest Weapon/Closest Target
10. Negotiate

For elaboration on these points, go read the article.