I'll Never Forget What's'isname(1967)

"He smashed up his desk, gave up a wife, three mistresses and went back to the simple life. Then his troubles really started!"

Overview

Advertising golden boy Andrew Quint is fed up with his fabulously successful life. In very dramatic fashion, he quits his job to return to writing for a small literary magazine. He wants to leave his former life behind, going as far as saying good-bye to his wife and mistresses. He finds, however, that it's not so easy to escape the past.