Success comes at a great cost, a lot of sacrifices are to be made before one can dream of achieving success. Your time and hard work must be your greatest investments.
Now your zeal is your power. It is your driving force to achieve that goal, to achieve that aim of success. You should be able to see what heightens your zeal to success, i could be money, it could be love for someone it could be anything at all. All that matters is that you achieve that goal and that all your time and hard work does not fade into thin air in waste.