I recently completed a streak of 32 days in which I got my behind out for a run of at least 1 mi per day.
This followed another streak earlier in the year in which I made it 24 days.
The earlier one, in particular, was sustained through a social media reinforcement meme (#RWRunStreak).
Sustained behavioral change is quite a hurdle for health care, particularly when it comes to exercising regularly, changing food intake and reducing the use of psychoactive substances.
There is a grant application or three in here somewhere.