You can’t. And it is futile to try.
No one wants to be told they’re wrong. They want to be told a story that aligns with how they see the world.
The addict knows that their lifestyle is bad for their health. But they keeping doing what they are doing because they have told a story that they can keep it under control. It’s the story that gets them to believe that the benefits outweigh the cost.
Until they’re stuck.
Everyone wants to see is a path to preserve themselves. Everyone.
Your job then is to shine a light on that.
And if you are lucky, you can help those see what you see.