A failure is nobody else but anyone who fails to accomplish/complete whatever he/she has started already. Yes, you are not/can't be a failure until you withdraw/decline from accomplishing/completing your career, destiny, goal, mission, dream, vision, aspiration and what have you? So from now onward, endeavour by all means to accomplish/complete whatever you've left unfinished/unaccomplished all these while. Never forget, refusing to do just that will automatically make you a failure.
Emeasoba George