Just do your best. Let me tell you something which may make you
feel better, and that is whether you can succeed later in life or
not is not due to your study results. So what if you do not fare
better than others in exams? In reality, success largely depends
more on your attitude in life and the people you know as well as
the society factor. But those are NOT good reasons enough for you
to slack, it just means that you are not condemn to failure, if
there is such a thing, by not doing well in school. I suggest you
work hard nonetheless, stop comparing yourself to your peers,
instead, be in competition with yourself, fight and get better
grades, challenge yourself instead of always comparing yourself to
some other people. Simply said, I read that there are some people
younger than 10 years old and they are already studying in
university, see the thing is, unless you're the lucky few in the
world, you're always gonna be second fiddle to somebody else.