clipped from: www.anxietyculture.com Once acquired, the habit of worrying seems hard to stop. We're raised to worry and aren't considered "grown up" until we perfect the art. Teenagers are told: "you'd better start worrying about your future". If your worries aren't at least as frequent as your bowel movements, you're seen as irresponsible, childish, aimless. That's a "responsible adult" game rule.
To the extent that worrying is learned/conditioned behaviour, it can be undone. There are psychological gimmicks for undoing the worry habit. There are also obstacles.