The measure of mental health...

[beeja]

The measure of mental health is the disposition to find good everywhere.
- Ralph Waldo Emerson.

What does it mean? I think it should be "the habit to find good everywhere is not good for mental health", am I right?

[Noego]

"The measure of mental health is the disposition to find good everywhere."

In other words, the more you look for good things around you, the mentally healthier you are.

It's pretty much optimism brewed down to a single sentence.