When I think about very first picture which I saw in my life that would be fields landscape behind my grandparents barn. Open, massive space filled with the wind and endless horizon. Wind which blows rising fears and dreams. I like to come back there in my mind. It makes me calm, focused, sharpens my senses.
I assume that inner field is universal feeling I guess. Place that is essential. Could be the comfort zone or restricted area, abandoned field of past or conscientiously cultivated present, first or last picture of life. Defining of the inner field is not so important actually, its essential to be there from time to time. What is Your inner field about?