Tough love can be real, or it can just be a species of codependent bullying in my opinion.
It's interesting. The ex-addict I know went through all the homelessness, starvation, petty crime and property damage phases of self abuse, and his family tried both soft love and tough love on him. But he only ever got clean because he was in a car accident so serious he was in traction for months. Now he's a happy family man. Luck's a fortune.