Missing the killer instinct.

Hi friends.its been a long time & i havn't written for you.sorry...I am not that good at it but still i like it :P
this article is totally ME. from a few days from now i have been thinking that something is missing in me.and finally i have realised what it is ???? 
The answer is the heading.Yes, the KILLER INSTINCT . i have seen that i keep making plans but never 

able to execute to the fullest.my thirst for reaching the goal keeps on decreasing as time passes by. and i think this is the very best reason     
that why i cannot achieve 100%.it happens with me that i succeed around 80-85% but why not 100%???this 80% is basically a Failure because when you can achieve full then why satisfy yourself with just above average. this situation always arises in many aspect of my life.whether in studies,handling a relation etc etc.and i think that i am not the only person facing this..i hope so :P.
The hunger for more decreases at the same rate it increased.try to remember the +ve exponential increase in the starting and -ve in the end.lol :P.
But m relaxed for now.at least i have find out the problem.now i have to be quick enough to tackle this as soon as possible.