I guess in the end creativity can emerge in several directions and it depends on which you choose. To be rationally creative comes with my job, so I am probably more inclined to that form. You reach a point in your life, where you need answers and then the whole I am the one thinking outside the box attitude will not suffice you anymore. At this point in life you see other peopel going their ways, your see your friends becoming someone or getting at something.
And if you have reached this point you really want too.