He often acted rashly and impetuously. After a devout childhood, he went through a sinful period in his life. After his conversion, townsfolk thought him mad and sent him to a madhouse. Eventually, he got hold of himself, put his life to good use, and became a saint. Read his story here.
John of God is patron of booksellers, printers, nurses and health care workers, patients and the sick, firefighters, and let us add, the obsessive-compulsive-impulsive, kinda crazy amongst us.
Art: John of God and Angel, Source