I've been diabetic for 7 months now and I feel the same as you sometimes. But you have to remember that you have diabetes but diabetes does not have you, so dont let it ruin your days. Living with diabetes its not easy of course, but we have to stay strong and talk with other diabetics it really helps. I've joined this site just to stay in touch with persons like me, perosns who knows exactly how I feel.
for those around us its hard to understand how we really feel, cuz even if they try they have no idea what are we going through. Some days are harder than others, sometimes I feel very sad but then I realize that it's not worht to feel so sad. I'm not gonna let it slow me down.
So when you feel sad just tell yourself that you are stronger than diabetes and talk to someone like us cuz it really helps. :)