One of the best sales people i've ever worked with I found out two years in that he was a daily heroin user
Most people think of the homeless or bums when they think of heroin addiction but there are a lot of very functioning addicts out there in the corporate world
I had heard high functioning is a misnomer. They may have one area of focus they can succeed under some definition, but the overall quality of life and relationships is very poor.
My understanding was that "high functioning" is relative to what is essentially "non functioning", where the person is unable to keep up even the semblance of a normal life.
Most people think of the homeless or bums when they think of heroin addiction but there are a lot of very functioning addicts out there in the corporate world