What did Paul learn?

....for I have learned, in whatsoever state I am,

therewith to be content.

Philippians 4:11

con·tent·ment  (kn-tntmnt)

n.

1. The state of being contented; satisfaction.

con·tent·ment

kənˈtentmənt/

noun

noun: contentment

1. 1.

   a state of happiness and satisfaction.