You don't have type 1 diabetes. Type 1 is not caused by pancreatitis. You have type 3c diabetes, which I understand has some slightly different considerations to management than type 1, you might find it useful to check out the type 3c section of the forum -
http://www.diabetes.co.uk/forum/category/type-3c-pancreatic-diabetes.73/
However, broadly, type 1 and type 3c are managed very similarly (although someone with type 3c is going to have to be more careful to avoid hypos as they wont have alpha cell function and will likely have to avoid a high fat diet due to creon) with a basal bolus regime. This would be where you take a background insulin and when you eat you take insulin to cover your food, adjusting the dose according to what you are eating -ie carb counting. Most diabetic courses are in carb counting, the main one being called DAFNE (dose adjustment for normal eating).
You seem to be on a mixed insulin regime if you are only on two shots a day? Is your insulin called nova
mix? With mixed insulin fixed doses that insulin will only be able to deal with a certain quantity of carbs. So you still need to count carbs with mixed insulin to make sure you are taking in the right amount of carbs. Have you had advice from your medical team on how many carbs your insulin dose is designed to cover?
High blood sugar can contribute to depression and cause low mood.
High blood sugar can also cause neuropathy.
What do your blood sugars look like when you test? Are you testing?
Diabetes is a vascular disease, high blood sugar makes the blood thicker and so this damages veins when thick blood tries to force its way through tiny delicate veins. Smoking has an adverse impact on the vascular system, narrowing veins. You have clearly already had problems with blocked veins. Well done on trying to quit smoking to hell avoid more problems.