Here's a good one taken from The Parents Tao Te Ching by William Martin
Remeber that you cannot teach
by preaching
Try to live with peace, contentment,
love and compassion.
This will be your lecture.
This will be your lesson.
The happier I have allowed myself to be,
the happier my children have become.
The more I have become myself,
the more they have done the same.
This has occurred later in my life.
Don't wait.