I like both books and especially like when their concepts overlap.
Here is a challenging idea-
Never avoid pain. Pain is not a problem, it is just a thing. It is just a feeling, just energy, just passing through you. Let it pass through- no need to do anything.
You can handle it!!!
Tell yourself, "So what, I feel pain. "
Don't stop it from passing through.
When we stop it from passing through, you got it, it stays longer. Allow it to pass through and teach the lesson. Avoid it and you have more pain without more gain. Feel the legitimate pain without wishing things were different. Things are how they are.