Waiting is an action.
It can be a tiring experience or a rewarding activity, depending on several circumstances.
The first element is the location. A long time ago, I used to arrange appointments with friends at nice places (the bridge in front of Castel S. Angelo, Piazza Navona), so that the wait was not unpleasant.
Then I start drawing (some samples appeared on this blog), thus taking advantage of the time.
Few years ago I noticed that waiting was becoming a stressful occurrence, and soon after I understood that was a signal of the approaching crisis for the 40th anniversary.
As for now, I generally read the newspaper (free press come very handle for this purpose) and sometimes, as today, I draft the next blog entry.