Some of the challenges concern how to project the future outcome of the behaviour, to make the person actually.... If you're going to take a stairway instead of taking the elevator, in one month what is going to be the impact on your life? What motivates people is outcome. In behaviour change, you don't see the immediate outcome. If you're able to show somebody what is going to happen in one month's time—that is, how is your behaviour right now going to convert into an outcome in one month—it is going to be a big motivator. One of the challenges we are facing right now is how to actually do this in terms of healthy eating, which is kind of complicated.
On February 9th, 2012. See this statement in context.