Why am i getting tense?

It is very weird. There were times when I did not care about how the work I did resulted in papers. I was happy to help people around me. Now, I have reached a stage where if people need help I expect them to share the credit. I have had enough of helping people and seeing them getting credit without even a mention of my name. May be its getting to me. Now, when I see something is not fare I really get angry!

Anyway I need to get hold of myself and get these things smoothly handled. More reasons to run away from this place!