I was the same, I used to even make up numbers for my diary to show at my appointments at the clinic. Yes I was stupid, but I went through that stage. I don't think I would ever be so stupid knowing what I know now. Maybe try and get him to learn more about diabetes management, or as I did, get into fitness and nutrition, which all aids with diabetes management. You can't build muscle with high glucose levels, so maintaining good control is paramount for fitness. A few good resources are: Phil Graham - Diabetic Muscle and fitness (he has a book called diabetic muscle and fitness guide - which is great) an online facebook group. This would be great for him to join and interact with or=thers. I'd recommend Dr Bernstein's diabetes solution, but as that advocates a lot of low carb and eating well, without really beating round the bush, its probably not best for him at this moment.