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.
Create a Safe Environment
Make sure that the environment is emotionally safe. One of the best ways to do this is establish a key ground rule: "Nothing that is said here will be used against you." People have to feel like they can speak freely from their heart without being punished for expressing their truth.