<human>: Can you give me the gist of the text in a nutshell?

Mine is a pretty minor one in some people's view, but it is pretty major in mine: 

Yesterday I received my results for the exams I had been studying for 3 months straight (sacrificing near enough my entire social life and mental state), I was expecting my grades to be: ABBC... instead I got all Cs. It was the most crushing moment of my entire life, all of the hard work and persistence...for nothing. 

Now I probably won't get into university, get a good job or be able to provide my mum, dad and two sisters with a comfy life/retirement. I absolutely HATE failure and this is the ultimate one. I don't know what to do and have this horrible feeling in the pit of my stomach of letting my whole family down. 

Fuck, I probably will never be able to get over this and that's such a horrible realization to have to face.
<bot>: Fucked up my exams despite working my fucking ass off and now have nothing to show for it but shitty grades and a shitty future.