An excellent question and one that infers either of two things: Firstly, we are Life Itself, in which case we were alive but possibly strewn out among a myriad forms, and secondly, did we have a personal, individual life as a human being before being born into this one, which infers Reincarnation.
Maybe we were both. And if we were both it would seem that, in our essence, (not our 'individual human souls' but as Life Itself 'spirit' It gets awkward here because no one appears to have defined the difference between spirit and soul.
Certainly I'm of the opinion that we Reincarnate; that all so-called natural tendencies and 'gifts' are earned by dint of application and learning in previous lives. On the other hand, I don't think the Whole of us is born into our particular body, that we are, in effect a part of the Whole.
Someone likened us to being an 'inlet' on a sea shore. My own analogy: We're like ice-bergs which appear to be different from one another but are made up of frozen water floating in an endless sea of water. The shapes are different, the essence the same. Or maybe like clouds that precipitate out of invisible water vapour. We were always there, but now we are seen. The water vapour was always there, but a drop in frequency/vibration causes our manifestation in a particular 'plane' or frequency spectrum subject to the sensory organs we possess.
But then, I'm pretty sure I've written a Hub or two on this very subject.
Have a great Christmas, and enjoy a propsperous and happy 2012.