More Translations from the Chinese, by Arthur Waley, , at sacred-texts.com
Keep off your thoughts from things that are past and done;
For thinking of the past wakes regret and pain.
Keep off your thoughts from thinking what will happen;
To think of the future fills one with dismay.
Better by day to sit like a sack in your chair;
Better by night to lie a stone in your bed.
When food comes, then open your mouth;
When sleep comes, then close your eyes.