Why is it & Why do i ?

why is it that when you really don't think you can handle one more thing, that invariably someone walks up to you needing something? why is it that you can spend your whole life wanting something, then when you get it, you wonder what the big deal was, and want nothing more than to go back to the way things were? why do i spend so much time wishing for tomorrow when i am not doing all i can today? why do i put off those things that i really need to do, that will enhance the tomorrows that i wish for? why do i think that getting the questions that roam around inside my head out will actually free me of them?