I don't understand how anything (other then health problems) can be blamed on diabetes. It doesn't actually DO anything, it just IS. You have it, end of story.
I have ups and downs, and been really depressed just like everyone else but in the end it can't make you act a certain way. Its still all a choice.
When i was young, every time i would get angry or sad my dad would always say "No one can make you feel anything you don't let yourself feel" and that stuck. You control your emotions, not your bf/gf not your boss, not your BS, YOU. Its a choice. You can be at 15, have a migrain, and throwing up, and then its just a harder choice but the more times you make the right choice the easier it gets.
Lets say you are walking down the street having a wonderful day, and all of a sudden you get robbed. This guy pushes you down and takes your wallet/purse and gets away! It happened, there is no taking it back so at this point you can cry and stress and worry until your life is ruined OR you can say "Well, f*ck, that just happened, time to make some phone calls" and then calmly do what you have to do and not let it affect you emotionally.
Just carry on living through it. He took some valuable things, but now they are gone, nothing you do will bring them back, so why be angry? Why be sad?
Any negative change in emotion only makes things worse 100% of the time. Do what you need to do, but its in your best interest to stay happy while you do it lol
It may sound difficult for people who are really 'emotional' but there is no reason anyone should every be angry, or sad. It never helps, and can never make things better, so again why bother?
I am not saying don't think about it, or plan things, or recognize the situation is terrible, just do it with positive spirits lol
Also, I am a lean guy as well, my legs are especially lean, probably the least fat on my body is my arms and legs, why are you guys still injecting there? Serious, i tried like 3 times and it always hurt and now its all butt, love-handles, and back of the arms. You have to pinch and pull, which helps a lot. Also, change your need after every injection, don't use the same needle multiple times, it will just make things worse.