The Kirk Douglas life story is typical of the experience of millions of other immigrants to these United States.
His Jewish parents left persecution in Russia to emigrate to the U.S. They were dirt poor. Hence, his father was a "ragman". Young Kirk worked multiple jobs to keep body and soul together and paid his way through college.
Kirk served in the U.S. Navy during WW II and was medically discharged for war injuries in 1944. He resumed his acting career that was interrupted during the war years and the rest is history.
They should make a movie about his incredible life.