Join a health cult!
So I did yoga a few years back for the first time and it was kind of nice but also time consuming and meh, whatever, I didn’t keep it up.
Then I started doing AcroYoga, which is a social thing and suddenly there was a purpose to yoga: develop flexibility so that you can do these cool new moves with people. In no time I was doing yoga at home.
My advice for health habits is to join a health cult. Raw food potlucks, group runs to train for marathons, overeaters anonymous, whatever. If it’s social it’ll work a lot better. And intimately social is even better. If you are friends with the people you are training for a marathon with, you care about it more.
Flossing support group, anyone?