I can't take this anymore

There's absolutely no point revising your work. The more you revise, the more you practise, you realise how much you can't do it.

I practised really hard for mathematics. And when I say that, I mean it. It's just plain demoralising to find out how badly I did for the recent math test. I expected, at least a pass. (well, it's possible but it's low, right?)

I just don't understand. I feel stupid, for one reason: I am stupid.