You don't always gain wisdom through suffering; sometimes you just have to listen and pay attention to the signs. Through that you can gain humility and a good eye for hearing who needs help. Jeff "The Dude" Bridges taught me that, and he that no matter what, "The Dude abides".
John Wayne starred in the film 'Big Jake' with his son Ethan playing the role of his grandson. His other son, Patrick, played his son James in the movie. (His other sons in the movie were played by Robert Mitchums son & Bobbie Vinton - can you sing Blue Velvet?)