I've been T1 for 20 years (21 this December). I was diagnosed at 11 years old. I experienced and still experience the same issues you are currently going through. I went through those tough teen years pretty much feeling alone. I had a supportive family, good doctors, and friends who cared, but to me, I was the one who was different. I had to test my blood sugar and take injections. If I was high, I could not have what everyone else was having. Everything I did seemed to be influenced because of my diabetes. I got down alot, never diagnosed with depression, but looking back, I definitely was! It took me a while to get past the "it's not fair" stage and just accept that this was my life, and I could either take control and enjoy it, or I could just give up. I decided to tackle diabetes head on because I didn't like the way I felt if I didn't control it. I looked long term. I didn't want any of the nasty complications that can occur with this because I knew I wanted to go to college, get a good job, and have a family. Honestly, I wanted to keep my body parts! Because I had long term goals, it helped me realize that the day to day things that goes along with diabetes are important (i.e. bringing my meter with me everywhere I go, bringing a pack of lifesavers just in case, taking shots even in front of my friends, etc). Those long term goals helped me stay focused on controlling it everyday. Plus, I'm a pretty competitive person and so far, I've beaten diabetes. My a1cs have been under 6 the past 7 years and under 7 since 1998. I've had this disease for 20 years and all my other organs still work, my eyes are fine (just saw dr today and got a great report), and am for the most part, a normal, healthy person.
After all that, my advice, and take what you want from my story, is to set short term goals and try to reach them. When you reach them, reward yourself!! The rewards helped me big time.
I remember the first goal I set was to make sure I take my meter with me to school everyday because I would often forget it on purpose because it was a constant reminder that I was different. I met it and realized hey, it's helpful to bring it to school with me because I can see if I'm high or low when I need to. It may seem silly now, but it was a big deal when I was in middle school.
Diabetes is a frustrating way to live. When you think you are doing everything the right way, something happens that can knock me back. When that happens, I just step back, think things through, and come up with a plan.
Keep fighting and don't give up. Yes you will get angry, frustrated, and even tired of this disease, but that's normal. Enjoy the moments when you reach a goal because those are the feelings we need to focus on.
Sorry this is so long, but I'm passionate about this lifestyle. I've been this way a long time and will be like it even longer and I know the importance of encouragement and sharing the frustrations.
Something cool the jdrf is doing now is a nondiabetic can experience what it's like to be T1 for a day. On their website, there is a link to sign up. The normal people get text messages throughout the day explaining how they should be feeling and how to treat a high or low or something. My wife did it and she said that she now has a greater respect and understanding of how I live my life.