Generally speaking, people get into your situation because they have been failed by their healthcare professionals. There is a whole shed load of information on really, really successful management of diabetes. The problem is, you have not been given it. If you're anything like I was, your teenage years were spent constantly hungry, and you were desperate to eat. Your control suffered, and instead of being supportive, your health team told you off.
As of now, that is in the past. If you are serious about changing, this is the truth. You feel so defeated by this condition right now.
Imagine what it will feel like when you find it easy to control. I didn't say if. I said when. Because you can do it. It will take effort. There will be good and bad days. But you can get there. This time last year, I embarked on a low carbohydrate diet, because I had been plagued by poor control. Diagnosed at 3, I had spent 23 years struggling, and mostly failing. This year has been amazing for me. My control has never been better, and I have never enjoyed my food more. Check out this video, it explains a lot about the rationale behind this way of eating.
Regardless of how you proceed, the best thing you can possibly do is educate yourself as much as you can. To manage diabetes, you have to look much further than your healthcare team, because they generally aren't much help on their own. I suggest reading Dr Richard Bernstein's complete diabetes solution. It gives loads of information on managing diabetes. Another good book is Think Like A Pancreas.
As I mentioned earlier, you can do it! You have joined the forum, and that is a huge step in the right direction. Keep posting, asking questions and learning. At the moment, you see this part of your life as a dark place with no hope. Take the right steps, and you can look back on it as the turning point where you took control, and ultimately won against your diabetes.