Hi mate, saying hello from Australia. I have been on insulin for 51 years and counting.
What I have to say is from that experience, not professional advice or opinion.
As others have said, if you are definitely type 1, insulin injections are a must. Maybe in your case the insulin you take plus the exercise gets you through but I remember talking with a bricklayer who took his insulin every second day, had to eat 18 weetbix for breakfast for energy and was as sick as a dog most of the time.
High blood sugar levels (what the docs call hyperglycaemia) are what we call hypers (hyper- = high, gly - glucose or sugar - aemia - in the blood) as opposed to hypos (hypoglycaemia- hypo = low).
Finding out if you are definitely type 1 diabetic is very important because of the need for insulin. So high blood sugars cause problems later but can affect weight ( lots of the sugar going out in the urine, less of what we eat can be used for energy), energy levels, ability to have sex, risk of infections etc. As you know hypos are not good to have either, particularly if you work on ladders/heights etc and for driving.
In Australia we have emus, flightless birds that can run fast to escape danger.
But what I call ostrich behaviour, hiding one's head in the sand to avoid danger or bad news, is what I, and many other diabetics, have gone through at times. As long as we don't feel too sick or too troubled by infections etc we deny what is happening to us, we pay little attention to our diabetes, our diet, and any medication and hope things continue all right.
You have posted on this site. Great - that is the first step. Can you do one blood sugar test per day to start with.? Say before breakfast one day, at lunchtime the next and before dinner on the third and mark the results on a calendar along with what insulin you took and when. Add in what food you had those days. That is a start. like marking progress of what you do in your job.
By all means let us know and make a list for your doctor or nurse. (yeah, we all at times have had to turn up and say sorry for missing appointments).
Can you do that for yourself and your support team here as a start!! I promise you there is more to follow in terms of hints and suggestions - The Magical Mystery Tour of Diabetes. Best Wishes, Hear from you soon, yeah?