Hi MCN02,
I was diagnosed when I was 18, about 2 weeks before Christmas and right in the middle of my Uni exams. It was a lot to take in, although 2 of my cousins were already diabetic so I already knew what I was getting into.
Luckily for me (probably because I knew a bit about it) I accepted it quite easily. I had the mindset of, I just have to get on with it and get used to it. Back then I was on 2 needles a day and I used to tell myself it was just like brushing my teeth. Do it once in the morning and once at night.
I'm now 31 and in my 13 years of being diabetic I've already seen big advances in diabetes treatments and attitudes. The two things that have helped me the most are Multiple Daily Injections (MDI) and the DANFE course (especially the carb counting and hypo treatment).
I find MDI gives me much more freedom to choose the times and frequency that I eat (which can be a lot as I tend to graze). I take one injection of slow acting (Lantus) to cover me for 24 hours. And I take a fast acting injection (Humalog) with most things I eat. I sometimes take so many injections for snacks that I joke I'm going to leak when I drink!
Carb counting really helps with this as well as it tells you the types of food you need to cover with insulin, and those that you don't. It also helps you work out a ratio of insulin to carbohydrate so you can figure out how much insulin you need to take based on the info provided on the food packets. This takes a lot of the guesswork out of eating and gives you more confidence when dialing up a dose.
Armed with both of these tools it gives you much better methods for controlling your diabetes and not letting it control you. I seriously push the diabetes boundaries as I have a VERY sweet tooth and a VERY big appetite. But as long as I know that I need to take insulin to cover it and I can figure out how much I should take then there isn't anything thats out of bounds anymore.
Like the others have said, getting a good care team behind you will really help, and it is really important to keep testing. Even if you are high, at least you'll know and can do something about it. I'm sure the clinic won't give you a telling off, but be happy to help you out.
Good luck with it all,
NiVZ