If someone tells you
you can’t do something,
certain things might be involved:
It could be something
they think they can’t do,
something they haven’t done,
and since they doubt their own abilities,
they’d definitely doubt yours.
If it is something they can do,
or they have done,
they might be trying to protect you
from the coming challenges
because they were once like you;
they might have gone through some challenges
that they don’t want you to go through,
that they don’t think you are
capable enought to go through.
If none of the aforementioned apply,
they could be jealous of you
because what you want to do
is something they’ve not done,
something they can/want to do
but have not had the opportunity to.
JUST DO IT!