In the end the answer is 42 - because it was Lewis Carroll's favorite number.
In all honesty, I'm still figuring it out; it changes as we go through life and take on - or lose - things, people, and circumstances. There's reason enough to believe that it's all random occurrences sprung from biological processes, and there's also reason enough to believe there's a great destiny at work where we achieve apocastastsis. It could be as individual as having and raising a family, or being an instrument of peace. It could also be being able to play and enjoy this physical existence while we're here.
So I suppose it's subject to individual interpretation.