What exactly is désinvolture?

[Gary Kern <gkern@alumni.Princeton.EDU>]

A RIDDLE FOR ALL MEMBERS OF THE ERNST JÜNGER LIST:

We have all talked about désinvolture, but are we agreed on what it
means?  Does the concept, for instance, contain principles for the right
way to live?  Or is it just an attitude?

Allow me to set you this problem:  Suppose that you are a devotee of
Jünger and find in his life and works a model for your own.  Say further
that you are speaking with a younger man and want to impart J's wisdom
to him.  What five (5) principles or pieces of advice would you give
him?  Would you start by saying, "Always maintain your distance."
 
I ask not as an academic exercise or a problem in semantics, but out of
a real desire to know what tactics Jünger or his vaunted désinvolture
might recommend for dealing with a disagreeable world.

GK

PS to Ulrich Oswald:

What did your native Russian friend say about "neprivyazannost'" as a
translation for "désinvolture?"