As a smoker I would take 10 5-7 minute breaks in a day. Now as a runner I have one 60-75 minute break in the day. In the military it was perfectly acceptable to stop what you where doing and have a smoke. Sergeants left you alone, people gave you that time to yourself. I get that same feeling from running now.
I bring this up because I believe running to achieve an objective is great, but not the only way to motivate yourself to do it. Running comfortably, free from constraints or expectations is free time for yourself. Even better is the fact that other people respect it and like grabbing a smoke in the Military, people will let you be while you do it.