I thought about this quite a bit as it seemed so brash and arrogant. Then, it all made sense. Go big or go home. Have a vision. Have a master plan for your whole life as you presently see it.
Timing is one difference, of course, between short and long term goals.
Another important difference is that with a good master plan, short term goals lead to long term goals which fit perfectly into the master plan. You can change your master plan, and your approach to it, as your interests and priorities shift and grow. You are not locked in. A master plan is a plan for joy and passion, not a plan for duty and obligation. Once you have put your future goals into your subconscious mind, they are begun.