No, not anything is possible. In fact, each person living in a developed country has a limited range of options and everything else is simply not possible. You sound like a reasonably intelligent person so try to consider that even if you 'made it' or you think you did, many people have to deal with issues that prevent them from taking the same path you did, even if they had the ambition and willingness to work hard for it. For every succesful job interview of yours, there are many people for which it was a failure, some of which were as qualified or even more qualified than you. For every pay rise, there are quite of few unexpected terminations or downsizings and they happen to competent, hardworking people all the time.
There are dozens of millions in the UK and billions in the rest of the world so concluding that anything is possible with hard work, based on your own experience, is a laughable, shallow slogan.