To learn anything other than the stuff you find in books, you need to be able to experiment, to make mistakes, to accept feedback, and to try again. It doesn't matter whether you are learning to ride a bike or starting a new career, the cycle of experiment, feedback, and new experiment is always there.
Top 10 Quotes by Charles Handy
Some of my unhappiest moments have been in organizations. Somehow it seems to be quite respectable to do things in organizations that you would never do in private life. I have had people insult me to my face in front of colleagues. I have had my feelings rammed down my throat on the pretext that it would do me good. I have been required to do things which I didn't agree with because the organization wished it... In my worst moments I have thought organizations were places designed to be run by sadists and staffed by masochists.