Its probably very normal to feel this way. The pressure of living with Diabetes is more than people care for. A lot of the time I get a little down or peed off with my blood results and hypos etc but youve no choice but to learn how to deal with it. I find that talking is the best way, with both diabetics and non diabetics. When I was at School I pretty much acted like I never had Diabetes and hated when people asked. I found it very difficult to fit in with friends who were going the shop and buying shed loads of sweets and drinks and id be stuck with a pack of sugarfree polos that would probably give me the runs. Lets be honest, who wouldnt get down about that?
The thing is, it gets easier. I know youve had it for 8 years but it took me till early adulthood to get used to mine. Nowadays, I kind of enjoy testing my blood and recording data on my glucose diary app and looking at graphs for the year etc. Everyone has their own ways of dealing with it. Its not the worst illness if you are sensible and nowadays you can eat pretty much what you want if you know how to count carbs (when I was first diagnosed I was on insulin called mixtard which was a mix of long and short acting insulin together, this meant I couldnt eat a single amount of sugar because I couldnt take extra short acting to compensate like I can nowadays).
Keep positive man and try to get some way of making it interesting such as researching medication and the history of diabetes medicine or something! Always here to chat if you need a friend mate!