really!!!I'm on the edge

I like to take initiatives. I like to please people. sometimes I got carried away and often forget that often in the end I'm the one who look like a complete FOOL! for example, there was this exam that me and my friends took. I took the initiatives to discuss the questions, all but one person give comments on the questions. I am aware that this person probably had no clue about the questions asked, all of us there except this person, thought real hard on how to answer the damn questions. I'm pissed at her at the time, wishing at least she showed some interest and join the discussion. At the end of the day, she copied all of the summary of the discussion without any small contribution whatsoever. now, if I got pissed just because of this small matter just happens for the first time then some kind of a friend I am, I thought, but hey man! this has happened couple of times before and the person ALWAYS got better marks than I am. CRAP!!!!! I can't blame the person entirely since I'm also a lazy ass person, but it kills me knowing that she got all the answers FROM ME, but she got the better marks. NOW, I'm completely on the edge. late this week, I'm the one who called the campus, I'm the one who make the reservation, I did all that, and she's the one who receive good marks. I'm Jealous. Hell yeah I am. I tried to cover this anger and frustation, but don't know if I could maintain my friendly gesture any longer. May GOD help me restrain my self and view everything wisely.