why...

Why do u sometimes feel lost or confused or hurt or feel like ur really mad for no reason...or somethings or people from the past come into ur mind and ur suddenly hurt again?...i just cant begin to explain to anyone how much negative energy i have been giving out to this world...some can say im moody yes thats true...but why does that have to deal with something thats happened in sucha long time ago, which doesn't have any real significance to my life right now on this day...i just think and think and drown myself with thoughts, which just later on make me wanna kill some poeple who have hurt me the way they did!...i dont know whats up with this world or myself....talking about it here really helps i mean i can say what i want when i want!....i just wish there was a machine that can make me go back in time and change somethings that i did or been with people that didnt really deserve the time...or what wud be cooler is this machine where when u start feeling bad it sucks all that out and makes u feel happy and makes ur forget....if we had that i guess noone would be normal and people wud all be happy thier way or another...just the thought makes me wanna get this "imaginy machine" am i insane..? i believe so but i also agree that everyone has a crazy side of them...that ticks them off and makes them go insane...and im sure 100% that humans hurt humans and thats the way it goes....till the end of time......