I think the simple idea is that you try to tie a new habit to a current habit
For example, if sometime after you wake up you eat breakfast, then you can "stack" a habit on to that habit by tying a new habit to it.
That way you can make a string of habits (then doing something tied to this new habit, once that's reinforced) which makes it easier to remember or do, as you have these strings of (hopefully good) habits that you've reinforced
I guess you could also then refine each habit or the strings of them by trying to improve each habit (if someone eats breakfast for example, of maybe eating a healthier breakfast)
Has anyone heard of this concept or experimented with it?