Sigmund Freud on the years of struggle

“One day, in retrospect, the years of struggle will strike you as the most beautiful”

This quote is repeated a lot in self-improvement courses and articles. We love it too. Please help us to identify the source.

Where did Sigmund Freud say that? Send your helpful links to ac@thevividminds.com, so that we can add them in this section. Thank you!