“I suppose if you had to choose just one quality to have that would be it. Vitality.  ― A Thousand Days: John F. Kennedy in the White House,” by Arthur M. Schlesinger, Jr. The window signs this fall in the in-process renovation at 540 Lake Street in Excelsior, Minn., talked about a new thing coming called The Commons: An Uncommon Workplace, a new place for entrepreneurs and people who are self-employed to come together and “co-work.” Interesting concept. I’m a self-employed writer and while I love having my independence, I need the energy of being around people to stimulate my creativity,…