One thing about human intelligence is absolutely certain: it is malleable, meaning it can be changed through exposure to new information or even by looking at what you already know in a new way.<span> There is no limit to what you can learn, and, contrary to what some may think, nobody's brain has ever been "filled."</span> The brain continually changes by making new neuroconnections between its cells, which represent new knowledge or skills, and when this happens, we say someone has become smarter. It is possible for humans to become smarter all the time and in any area of study. Some subjects will be harder for you to learn than others, but learning in any area is possible. Intelligence is not a fixed quantity that you got at birth and are stuck with. You become smarter every day, and the intelligence you achieve in your lifetime is unknowable. That said, it does appear that your mindset about learning will have a heavy impact on how much you will learn - and just about everything else in your life.
Well if you think you can't do something then you won't try as hard as you can, and you wont reach your full potential. So ultimately you wont achieve the grades you want.
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