I would highly recommend taking his bootcamp course. As a first stab, I would recommend not approaching the problem as “how do I motivate my users?” Instead, assume that their motivation is nearly zero. If you assume that, then what sort of things can you ask them to do, and how/when do you have to ask them to do it? This is the rationale behind “smallest possible habit.” It requires almost no motivation whatsoever to take 3 deep breaths.

Motivation is a fickle beast that ought never to be counted on.