pas·sion/ˈpaSHən/Noun1. Strong and barely controllable emotion.
ob·ses·sion/əbˈseSHən/Noun2. An idea or thought that continually preoccupies or intrudes on a person’s mind
Some of my friends would argue that my running is an obsession and sometimes they are right. I prefer to think of it as my passion. The difference is subtle but important. I wish I had made the distinction when I created this blog.