Time

Time is not on your side, but that doesn't mean it's your enemy. It's not holding you back because time is not what you think it is. We've created a system of measuring it, breaking it down into seconds, hours, centuries. This is only our interpretation. Time continues without us, unaffected, and we are no more its master than we are its slave. We could one day change our units of measurement, give ourselves more time, but that wouldn't make us any less afraid of running out.