In my view ones purpose is something one should be able to live everyday and in every moment beyond a task or activity it would be a way of being. What purpose does a tiger have?
Since you're Glover-aware, I'd like to say I agree with what you've written above and I came to that mindset after reading NMMNG. What Deida and others refer to as "purpose" I now see as the acceptance of yourself and the willingness to strive toward your happiness on your own, whatever that may entail. It's not one specific agenda or a handful of specific agendas, though that may be a good way to start. To me, though, the real idea is being able to say, "I'm worthy of the happiness I seek and I'm willing to find it in the manner I choose. Those who find my way appealing are welcome to come along for the ride. Those who don't are welcome to their own journey."
That still leaves room for compromise and consideration for any who may choose to journey with us. But it means we don't start acting in a way designed to get what we want from others unless we explicitly know that our behavior *will* get us what we want (i.e. if I give the pizza guy $20 he'll bring two large pizzas to my house).
Stop WaitingFeel EverythingLove AchinglyGive ImpeccablyLet Go