What a great idea!!! Some favourites of mine...

"When you're going through hell, keep going." - Winston Churchill

"Pain is inevitable. Suffering is optional." - M. Kathleen Casey

"When the Japanese mend broken objects, they aggrandize the damage by filling the cracks with gold. They believe that when something's suffered damage and has a history it becomes more beautiful." - Barbara Bloom

"When you come to the end of your rope, tie a knot and hang on." - Franklin D. Roosevelt

"Remember, if you’re headed in the wrong direction, God allows U-turns!" - Allison Gappa Bottke