I found 3 good quotes applicable to our family life from an old teacher's edition math book from 1997*:

1. Be pleasant until ten o'clock in the morning and the rest of the day wwil take care of itself.
~Elbert Hubbard

I need to do this . . . tomorrow. I really hope it works.

2. Only those who have the patience to do simple things perfectly will acquire the skill to do difficult things easily.
~Johann Von Schiller

The Bible also says this in a verse which says, He who is faithful in little things, I will make him ruler over much.

3. A pessimist finds difficulty in every opportuntiy;
an optimist finds opportunity in every difficulty.
~Anonymous

This is a good one for everyone in our family.

*Teacher's Edition Prentice Hall Middle Grades Math Course 2, 1997