Flat tire a blessing?

I got ready to go to a long-distant client this morning and realized that I had a flat tire(!).

I am so thankful that it was in my driveway and not somewhere on the Garden State Parkway, miles away. I then started to think about how many free hours I would have today to work on some things that I am trying to finish.

Recently, I read a post where someone stated that positive thinkers are just in denial. I don't agree. Facts are facts, but I'd rather be happy.