As usual, your intuition will be absolutely impossible to deny. If a coworker asks for help, advice or even just a sympathetic ear, don't hesitate to offer it. You should probably expect it, in fact. If they don't sound like they're going to follow your counsel, don't be hurt, especially if they're a younger person. Remember how it is to be so young that you think you know it all? Be understanding, and let them live their own life.