There’s another futility and that’s doing things on the power of your own ego. There’s such a thing as vain industriousness. Sometimes we need to do less that means more.
1/2. Vain industriousness? Lol. That is what our ego-centric country often tells us to do. NOT news, but always good to read a reminder.
3. You second statement is meaningless as written. I THINK you mean that we need to do more that MEANS more and to do less that is, essentially, meaningless.
God-centered should be our mantra--NOT "me-centered."
I did get the gist of what you meant to say.