That's a hard one. I can't do more from here than say "yes, that's important," I have no techniques for this that you don't already know.

What I was more than half-expecting when I saw the title was the other direction: how to take things that a person knows are true, or has decided make good life guidelines, and internalize them. One of my mantras (which I got from my girlfriend) is that we have to work with the Vicki we have, not an ideal Vicki who is stronger, healthier, more energetic, etc. Saying it helps, sometimes, but it doesn't stop me resenting that this is the Vicki I am, and unlikely to change much.