Bad PhotoSession !!!

well , i'm so depressed that i really i can't sleep , after about 7 hours shooting and about more than 6 hours editing and printing , i gave the client the shots and i was so proud of what i'v done he told me ' mmm .. not what i expected about 2 or three photos are ok but the other ( about 25 photo ) not that good at all " and he left me i was so depressed never heard these words before about my shots ..

anyone had similar situation and overcome it ? any advice ? , i know some of you will see it not a big deal but for me it's ..

P.S : sorry for my bad english ...
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Panasonic Lumix Fz-8

'Never forget that all the great photographs in history were made with more primitive camera equipment than you currently own.'