Like most people I knew, I thought drug addicts were the kinds of people we see in doorways in neighbourhoods most of us try to avoid - people obviously strung out, often homeless and possibly psychotic. I didn't think my son could become addicted, but he had.

Since his breakout role in 'Call Me By Your Name,' Chalamet has been described as a young Leonardo DeCaprio and James Dean. Not only does Chalamet resemble my son when he was younger, but he embodies his spirit.

If a child had another disease, we'd be open about what we were going through, but addiction is stigmatised and comes with shame and guilt.

David Sheff Quotes