If a person is not willing to change, why bother to tell them about their faults, or spend useless time focused on their faults as you see them? It won't change those persons. You are the only person you can change. Concentrate on your own faults. If another person wants to change and asks for advice, opinion, help, then you can bring things up. You can only help people who want it. Of course if you don't change then you probably don''t want to either.