human never change!

"on that day we knew about human behaviour. when our friend fails, we feel sad and when the friend comes first in ranking, we feel more sad". it was quoted from 3 idiots hindi movie, madhavan's monologue (of course e translation). damn, seriously, human never change!!! even myself has felt so, to an extent that i felt so inferior in front of that fren , hehe..
when e result was about to be announced, i prayed a lot, hoping that i can at least pass e exam, n when it was out n i passed, i was feeling bad about e ranking n wished to get a higher one. n i think if in case i got a higher ranking, i will be wishing to get a distinction instead!!! (hahaha, what an exaggerative wish).... why are human always not being grateful???
here, a Quranic verse comes into my mind
        "When distress seizes you at sea, those that ye call upon - besides Himself - leave you in the lurch! but when He brings you back safe to land, ye turn away (from Him). Most ungrateful is man!  
(  سورة الإسراء  , Al-Isra, Chapter #17, Verse #67)"

yeah, that verse implies till now, at this moment. most men are ungrateful. Gandhi has once said> the world is always enough for men's need but will never be enough for men's greed. very true...

i am fret that one day i will be one of those men, may Lord guide me. i just don't understand why people can change so drastically just because of worldly life. can't they think that we all will be the food for earthworms one day??? can't they see the truth and guidance from Allah which is very clear??? or these may be e signs that e world is going to end, only God knows....