It is possible to be happy, but sometimes it will be really hard to be. Nobody said diabetes is easy, but nobody ever told me how hard it can be sometimes. If you keep taking care of yourself, just seeing the perfect numbers and small shots/injections can be enough of a treat, haha! My advice on how to be happy with diabetes is to remember that you aren't diabetes, and diabetes isn't you. Yes, it is a part of you now, but it is a very interesting and different part of you.