Simple does it

I like this "to do" (and not to do) list because it is simple.

1. Think of what is right and true.
2. Practice and cultivate the science.
3. Become acquainted with the arts.
4. Know the principles of the crafts.
5. Understand the harm and benefit in everything.
6. Learn to see everything accurately.
7. Become aware of what is not obvious.
8. Be careful even in small matters.
9. Do not do anything useless.

from "The Earth Scroll" section of
The Book of Five Rings