“Take the long view and allow yourself the fun of failure every day.” I definitely fail in someway everyday, sometimes I can laugh at myself but not every mistake can be seen as humorous until some time has passed. Laugh. I think knowing how to laugh helps you not take yourself too seriously. It keeps your mood light which is important when working collaboratively.
“Design is an act of generating ideas, testing them, and repeating this activity to find what works and what doesn’t work in a specific context.” I believe for the professional world one of the most important contexts’ is time. Ultimately you must complete the project within a certain constraint or it will be worthless to the client.