Habits are unthinking and automatic behavior. They are extremely useful because they free up the mind when doing routine activities. They also make complex behavior possible. Our daily routines are highly complex affairs, and without consigning these routines to habit, getting through the day would be mentally taxing and perhaps impossible. However, bad habits associated with dangerous activities such as driving can be lethal to both the person with the habit and to other motorists on the road. Here’s a question to consider. Which driver is most likely to cause.