Habit or Addiction

Addictions are NOT good, according to the medical community. But good habits are supposed to be good.... The line between a habit and an addiction is fine.
I have been running every day for quite a while now, so not going for a run feels very hard, almost akin to withdrawal symptoms. I have not run for two days in a row now. While the body feels sluggish, it sends a reminder that running is not an addiction, just a good habit.