If you want to work on this the analog way, one thing that helped me is mantras. It's actually very simple - if you really want to hold on to something then boil it down to 5 words or so, and mentally repeat them until they feel like well-chewed gum. Repeat them every once in a while at completely random moments with no context, you're trying to generate a mental tic.
Eventually the thing you're trying to internalise becomes a mental habit, and starts to pop into your head all on its own at just those moments when you need it most.
Mantra's is a great concept, and I think you're on the right track. I think I've unwittingly implemented some of my own, like commitment. That is definitely something that i've tried to adopt.
But simple? I wish it were so, for me. My thoughts move in too many directions, and i can so easily deceive myself, that there were a great deal of things that were not just mantra but voices screaming in my head to do something that would rarely/ever get done. And attempts to undo them were themselves undone with time; which made it all just very stressful.
But you know, surrounding the concepts of behavioral and cognitive changes are a number of old school/new school concepts, such as this, that I think are worthwhile to explore more.
Eventually the thing you're trying to internalise becomes a mental habit, and starts to pop into your head all on its own at just those moments when you need it most.