One of the great wisdoms I gained from business school is the concept on vertical (up or down stream) and horizontal (across) strategy. It always remind me that I am on that curve too. I need to find my balance so that I'm not skewed heavily on one direction.
This is a not a tough decision to make as we grow and see the world differently than ever based on our learning and experiences. And at times, there's the growing pain period when we stuck at one for too long and nothing ever come out good from that. But hey! That's what life is all about, learn when you tumble; and look up for more opportunities when you are on top.
And to me, getting to the optimum point on that curve is an Oh Shit! Moment (OS!M)