I would like to believe that most people (fortunate enough to have the luxury to dwell on these things) meet the grand passion of their lives at some point.
Maybe at different points in their lives.
Know it very early and you may have time to grow up with it, fail and recover. It will probably feel natural and inevitable.
Meet it late enough and you might have developed the capacity to deal with it and embrace it.
But what if you are 18? Awfully sure of yourself and woefully unequipped.