Living with any chronic disease is a challenge every day. I have Crohn's Disease, and I've struggled with it for almost 40 years...more than 10 before it was even diagnosed.
I've known people with diabetes, and it sounds like you're doing everything right...except maybe making up for bad diet with your insulin. But everyone is different, and you seem plenty aware enough to handle it.
Keep a good attitude and keep up with it like you have been! As you have found, you learn to cope with it after a while, and it's only a big deal occasionally.
Good luck, and keep it up!