Scary topic, and knock on wood it doesn't happen to anyone, but...
What if one of your closest family members; spouse, sibling, parent, or child came to you and told you that their mind is made up, and they have decided to join the organization. How would you respond? What unbiased, loving council would you give them, so as not to ruin your relationship with them?
I have thought about this for a couple of days now, and still don't have an answer.
Your answers may come in handy one day...