How do I...

"You can't control his drug use"
"You need to detach from him"
"If he is bent on going to prison, you cannot stop him"
"You have to take care of yourself"
"You have to learn to emotionally detach and not take the responsibility"
"You have to let go of the guilt"

How the hell am I supposed to do that????????

How do I not care if he goes to prison?
How do I not care if he continues to use?
How do I not care if he continues to deal?
How do I not care if he maintains connections?

How do I get rid of the sinking feeling in my gut?

This is my one and only son.