Each one of us, every single one amongst us has at least once, if not more, accomplished something was once seemed impossible to us.
It is not something that is impossible that we fail to achieve it.
It is because we are so conditioned to not leaving the herd, marching on our own path, of getting out of the couch and starting to make connections; and most importantly to leave the comfort of being just as we are so that we become someone new: these are the factors that all our dreams are not possible.
It is not a bad childhood, nor a nagging neighbour, nor a relationship failure, nor what someone else tells you why you cannot do it.
If you think you are capable of anything and achieving your dreams, nothing and no circumstance can stop you.