I skimmed through this and saw some good advice: "balance, balance, balance" at the core, with tips.
I started skimming after reading through the "Priority Check" self-test and the options for barriers to diabetes care listed were: Laziness, Disorganization, and Embarrassment.
Ok. If you're going to write a book for teens that talks about an upsetting thing, and you're going to talk about how upsetting it is and how the upset can get in the way of dealing with the thing...less antagonizing words! Don't say lazy. DON'T say LAZY! Especially when, in the explicatory paragraph underneath lazy, it becomes clear that what you mean is "unmotivated"--a very different thing. How many times do teens get told they're lazy when they know they're not? Lots. Don't do that.