The poet in the poem ‘A Psalm of Life’ advises us not to trust our future, however pleasant it may appear now. It is because we cannot completely be certain of what future would bring to our life. What looks very good at this point, may change with time. Moreover, we may get complacent if we are obsessed with our bright future and neglecting our duties at hand. So, it is wise to work and continue to work in order to achieve perfection, as quality line has no ending.