Hey
I had written a whole load of advice and then I pressed something wrong and lost it!
So lets start from scratch.
Lack of sleep will make you go crazy for sure! Your family and doctor need to know the truth. Not that it will change their minds, but the truth is always good.
You would have to explain this rage issue thing to me before I pass any premature judgment on to you in the form of "advice".
Otherwise, try to stay calm and listen to people. Lay of the coffee, sugar and/or alcohol.
Go with the flow... It might not be a bad idea to pray for some patience.