Retirement and old age are predictable crises. But Gail Sheehy was only able to talk about what we should do at each stage in our own strength. Christian good news offers us the mighty power of the creative Spirit of God. A simple answer is to ask and receive. But there are qualifications.
Old age is also a tribal situation.
I should stop trying to do. But, rather than thinking of resting from previous labours to do nothing, what I need is an open-ended freedom to create. The freedom to create can come in two forms. I can choose to create a garden, a hobby, a club, a service to the community, and hundred other good things by my own wisdom and energy. The deliberate choice to let the Holy Spirit inspire and motivate me is a quite different mindset.