Go Straight Meaning

Example : 1921, Edgar Rice Burroughs, The Efficiency Expert, ch. 3:  "Oh," said Jimmy, "if I ever want any one to break into a safe, come to you, huh?"  "You get me," replied the other. . . .  "I should think," said Jimmy, "that a man of your ability could earn a living by less precarious methods." "You would think so," replied the Lizard. "I've tried two or three times to go straight. Wore out my shoes looking for a job."1951 Sept. 24, "Mexico: Toward the Perfect State," Time:  [H]e got a law passed threatening them with jail if they did not go straight in the future.1989, John Grisham, A Time to Kill (2004 reprint edition), ISBN 9780385338608, p. 12 (Google preview)"  He's proved very reliable since he was paroled. He's a good kid tryin' to go straight, for the most part.1995 July 2, John Tierney, "The Big City: Cheats Like Us," New York Times (retrieved 13 Sep 2012):  "I can't take no more time in jail," he said. "I'm going straight."