If you're alive now and capable of reading this, then obviously your spirit is at least a few years old - and probably more than 10 or 12. But it's entirely possible that it is substantially older than that. After all, just because your previous bodies might not have stuck around until the present day, doesn't mean your spirit didn't have a previous corporeal home - that would just be a waste of a perfectly good immortal soul.
Indeed, even if this is the first time your spirit has made it to Earth and enjoyed life as a human being, it could still have been out there beforehand, as God says in the Bible, "Before I formed you in the womb, I knew you."
Given that, it might be useful to know just how old your spirit is. This might help shed some light on important traits like how much you experience nostalgia or deja vu, or whether you often find yourself feeling like you've met a particular person at another time or place when you know that can't be true.
If you're completely gung-ho about everything and find the whole world new and shiny, perhaps you're new and shiny yourself. So tell us a little about how you're managing your time in this mortal coil, and we'll figure out if this is your first rodeo or not!