The answer is oxygenated.
It’s C so that the doctor knows that the patient seriously understands
Use regular reminders of personal motivations like family, career, and health.
Or
Keep his schedule and friends as consistent as possible to avoid too many changes
I was once a drug addict, and both of these things helped. Keeping a tight schedule and sticking to it really helps, especially in the beginning. And Using regular reminders of what you will lose/ and what you want for your future are both ways that really helped me.
