Limit

[aira93]

Putting a lid on something is not a bad idea sometimes.

For instance, food containers need lids to make sure the food stored won't go bad in a period of time.

For a depressed person, it means to never push the vulnerability of someone's mental to the edge.

If you do, you'll fall off the cliff the next day.

Consider yourself lucky if the person is willing to wake from the slumber on her own.

If not...