Morning Spell,
As much as it feels right (warranted) to you to hate the diabetes and all that goes with it, hate won't help you. It can give you some juice to hang onto negative feelings, but letting go of them will give you far more strength.
Everyone lives at a particular level(s) of consciousness (state of mind if you like). It all depends on your life experiences, upbringing, culture etc. Your state of mind effects your feelings, decisions and experience of life itself.
Levels of consciousness starts at the lowest levels of humiliation (I think everyone has felt this at some point), despair, regret, anxiety and hate. At the highest levels we have oneness, loving, wise, merciful etc. With hate comes anger.
Just being aware of these levels of thinking can allow you to move up a level. It allows you to pause what you are doing and to think again about what you are doing to your self.
I hope you can pause for a moment the next time you feel hate and just let yourself know, you can think at a better level.