Regarding boredom, I’ve can always find something profitable to do – even in a doctor’s waiting room. I always take a good Bible-related book written by one of the brethren, so that I’m constantly learning while I’m waiting.
As I grow older, I’m very aware that time is of the essence: http://mbriley.preachersfiles.com/2006/01/08/making-wise-use-of-our-time/
As our Lord once stated:
“I must work the works of him that sent me, while it is day: the night cometh, when no man can work” (John 9:4).
Here’s an article I wrote on being productive in a doctor’s waiting room: