I like what the stoic philosopher Epictetus said about willpower, and how Sebastian Purcell broke it down in his https://medium.com/illumination-curated/how-to-build-your-willpower-according-to-the-stoics-and-aztecs-4bd0fc59c421. "What Epictetus is saying, effectively, is that

1. one part of willpower concerns the ability to do what is disagreeable,

2. another part concerns willing not to do something, and

3. a final part concerns knowing what you truly want in the first place.

These are, in short, your will-to, will-not-to, and want-to powers."

I wrote about that in my https://medium.com/channspirations/the-serenity-prayer-df758d99c956 and rewrote the serenity prayer as:

Gods, please breathe into me the strength to do with serenity that for which I have distaste; the strength to say no to burning desires; and the wisdom to know that my path will lead to what I truly need and serene happiness will ensue.