Check out motivational speaker DeVon Franklins' intervention tips.
The key to a successful intervention is the breakthrough. The breakthrough is the moment when the person you're intervening with clearly sees the error of their ways (in a way they hadn't before) and is determined to make a positive change to correct the problem, which they have been resisting to correct before. Here are some helpful tips if you feel that a family member, friend or loved one needs an intervention.
Empathy isn't about agreement, it's about understanding. Sometimes we don't like to empathize with someone when we feel they are wrong. You can still think they are wrong and still have empathy for their point of view on the matter. Empathy is a powerful tool for a successful intervention because when the person feels understood they will be more inclined to trust you and the rest of the process.