To become self-aware people must be allowed to hear a plurality of opinions and then make up their own minds. They must be allowed to say write and publish whatever they want. Freedom of expression is the most basic but fundamental right. Without it human beings are reduced to automatons.
My method of helping someone is saying 'Wow you look amazing. Let me help you look even better.' I think tearing someone down is an awful thing to do. It has a lasting impression on people.