At first I felt a little guilty about this-- as if I was building protection against someone. But actually, it is simply for me, in support of me and my own energy. Rather than feeling this shield as a barrier between me and the person I'm interacting with, I walk into the situation feeling whole and safe already. This allows me to interact fully and warmly, without holding back for fear of being overtaken or attacked.
That swim seems to me like a miniature model of life. Anxiety crescendos and decrescendos; joy alights and then flies away. Grief goes on and on; overtaking me for a time and then lying low. Those anchovies are still out there somewhere in the ocean; sometimes they're all I can see, and sometimes the water is clear. Things come and then they go.
To ask what I should do next encourages me to use my brain and my judgement to think about what activities are valuable or desirable. But to ask what is required encourages me to be mindful of myself, inside and out. It asks me to scan the state of my mind and body and figure out my actions based on what I need at the moment.