I have always told friends and family to be prepared because you don't know what will come. Often I tell them this when their life and personal growth stagnates.
If you stagnate and spin your wheels, don't graduate college, you may miss that job opportunity at a dream company.
If you don't grow your career, don't earn what you are worth, you may miss out on your dream vacation or dream house.
Life is finite and it is entirely too easy to sit there a dink, smoke a joint, and do nothing. Existence wants us dead and it isn't until we push forward to bend it to our will that we can consider ourselves living. Nothing comes to those who wait except ruin.