I am not sure if this is the reason but since taking novorapid insulin i have become very withdrawn and feel like i am in my own world a lot of the time i don't seem to have much interest in many things and find it very hard to make conversation with people especially the ones i work with.The only person who i can really be myself with is my wife and just want to know if anyone else has felt like this. I have lost a lot of confidence and need to try and find the reason why.