the habit of shutting doors ...

the habit of shutting doors behind us is invaluable to happiness; we must learn to shut life's doors to cut out the futile wind of past mistakes.
 Marjorie Holmes

Quotes from the same author

A child's hand in yours - what tenderness and power it arouses. You are instantly the very touchstone of wisdom and strength.
 Marjorie Holmes
Let me remember that each life must follow its own course, and that what happens to other people has absolutely nothing to do with what happens to me.
 Marjorie Holmes
The man or woman who treasures his friends is usually solid gold himself.
 Marjorie Holmes