I believe many of us have watched a dear friend or relative make choices that harm others as well as themselves. Its a difficult thing to come to terms with because its hard to simply stop caring about people we do in fact care about. Setting a good example does not always rub off on others unfortunately. I think its a good idea to confront those people with a balance of sternness and empathy in mind. For some, being met with the cold plain truth by a close individual causes some deep inner reflection and that's good. For others it can be seen as condescending and hostile. However that is, even if done right, unavoidable. Ties are cut. Even so its important to relay that at least on your end (if your willing) it is possible to maintain that bridge of companionship even if the individual has set fire on their end. There is nothing left to ask of yourself if you know you value your friendship and have made attempts at resolving some destruction on both your end and their end.

People of good nature should not fear the wrath of their friends when confronting them about being unjust. The way one goes about that confrontation is key. It truly is a matter of mental warfare. Analyze the situation accordingly. Do not bring an air of superiority or self righteous judgement to the table. Its difficult - being of virtuous character is difficult.