Sorry for seeing the comments now, but it's never too late hopefully.
Therapy helped me. Looking back first important step was noticing that I am angry. It is strange how hidden and unrecognizable anger can be.
Second part is discovering why I was angry. As soon as we discover why are we angry, we stop being angry. When ai asked my shrink how does that work, he said "I don't know, but it works". And it really does.
Now when someone says "I am angery and I know why I am angre" I am sure they have no idea.
And I haven't found other way to resolve that, than psychoanalysis as therapy.
I remember, at that time, I was more worried about how admins in my local ISP spend their time than some far away company.