I was diagnosed in 2012, and I remember well all those feelings. BUT, know that THIS IS NOT YOUR FAULT. In fact, when I was diagnosed, I had been doing ALL THE THINGS that "THEY" say to do to avoid Type 2 diabetes: I was eating a healthy, well-balanced diet, I was exercising daily, I was at a "healthy" weight. I'd been doing that and maintaining my weight that way for over a dozen years by that point -- and I STILL got the diagnosis.
Now, in my case, there is still some question as to what my true diagnosis should be, but that does not matter. The truth is, as others have already pointed out - there are so many factors that are BEYOND OUR CONTROL that can lead to diabetes that it is clear that NO ONE is to blame for getting diabetes. Nobody -- no matter how badly they "behaved" can be blamed for "doing this to themselves."
What IS in your control; however, is what you do now -- to maintain and improve your health. Diabetes is a condition that can be managed with the proper combination of activity, diet and, when needed, medications. And the need for one or another medication is not an indication of "failure" on the part of the patient - it's just the nature of THAT PERSON'S diabetes. I need injected insulin to maintain my health. Others need nothing. Others need metformin, and still others need a combination of meds. What you need is just that: what YOU need, so don't let anyone tell you that you 'got there' but doing something wrong. The bottom line, though, is that it is possible to live a long, healthy and productive life with the proper management of your diabetes. Is it always easy? No, it is not. But it is very possible.
I well-remember the confusion and fear I had when first diagnosed -- and still have those fears now, from time to time. I do, however, look forward to maintaining my relatively good health by doing what it takes to manage this as well as I can -- there are too many good things in the future to look forward to, and I want to be able to enjoy them all.