Hey, I'm type 1, diagnosed age 4 and now in my 3's. It's a real pain sometimes and can really get you down, but you have to think of yourself as a whole, as a person with thoughts, feelings, traits and personality. Don't let it define you. It's a constant in your life but it's not 'you'. If you can focus and get on top of it, you'll find you feel a lot better about things. When it's all over the place and you're tired, grumpy, blurry eyes etc anything else going on in your life tends to magnify and you feel you can't cope. But I decided long ago that diabetes was just something I had to deal with, and deal with well. And those little moments when your blood is perfect, when you exercise and eat well, you feel great you've achieved and shut it up for a while. i recommend a book called 'Diabetes Burnout' which may help. If you can't afford it let me know and I'll send you my copy.
Don't give up. Don't let just one aspect of your body dictate your life. Much love and we're all here to help.