"Bonjour, Monsieur Gauguin" by Paul Gauguin
I can’t find much evidence of Gauguin’s mental instability from his paintings but that is not surprising because his suicide attempt (quick version from poison) was unsuccessful. His behavior is more telling than his painting. He suffered from syphilis and was a fan of morphine and booze, which combined to kill him at 54. Where is the cry for help? Early in his career he quits his job as a Stock Broker to pursue his passion for art. That’s crazy!