In the field of Behavior Modification or Motivation, there hasn’t been any studies discussing this “Lubrication” topic as far as I know. The phenomenon, however, is very common in our daily life. Take drink water for example. When the water is available beside the working position, people tend to drink more and thus become healthier (sbd help locate the ref for me). From the perspective of psychology, it is called a cue. But from my point of view, as a fan of Behavioral Economics, I would say it is because the cost reduction of the target behavior lubricates the decision making process inside our brain.
As a professional habit formation researcher, I can tell you both the idea of cue and of the cost reduction theories hold true, since neural scientists have evidenced our brain operates with a parallel system consisting of reflective and conscious network.