A 'life well lived' doesn't matter only at the very end of the journey, it defines quality, quantity, depth and so on of every single step along it, its just an ultimate metric to use.

I can certainly identify with similar approach, I call it 'looking at actions from my death bed', and how would I rate them and overall process of living my life'. That moment itself is largely irrelevant, the path to it means everything to me.

It lead me to many happy choices and no regrets.