Two monks were watching a flag flapping in the wind. One said to the other,
"The flag is moving."
The other replied,
"The wind is moving."
Huineng overheard this. He said,
"Not the flag, not the wind; mind is moving."


There are two statements to deal with life:

If you can't do something about it, then don't worry about it.
If you can do something about it, then don't worry about it.