very disappointed with myself

just ended my presentation, this is the first time i did so badly..very badly.i was so .....haix =(
feel so sorry for my group members.. we did this power point and hand out for the whole night. many of them did not sleep at all.....saty the whole in school to compelet this report and power point....we put in so much effort....but in the end...i did so badly..."sorry, friends....waste ur efforts....SORRY!!!"

First time, really the first time i feel so bad and disappointed with myself..i think i could do much much better than this...

what is happening ?

can only improve, CANNOT worsen like that....

i think i am over confident and this is the result....i was thinking i did quite well for last few rounds..then can do well for this time also....haix...
i cant imagine my result for this semester.....

=) nvm...i will do well next time...

IT'S A MUST