You should walk the right path and not do anything illegal.
Tips
usage
Both literal ('the main road') and figurative ('the morally correct way of life'). The figurative sense is more common, often paired with 走上 ('step onto') or 走 ('walk'): 走正路 (live an honest life), 不走正路 (go astray). Antonym: 邪路 / 歪路 (crooked path).