Straight and narrow

The phrase "Straight and narrow" typically refers to a person's moral, ethical, or lawful behavior or code of conduct. It implies that a person is living a virtuous and righteous life, following a path that is marked by integrity, honesty, and adherence to societal norms and rules. The term can also suggest a lifestyle free from vices, temptations, or wrongdoing, indicating someone who is disciplined and focused on doing what is right.