The speaker describes a day spent almost entirely inside their own head. They insist that their work happens "in my mind alone," so even a walk in the garden passes unnoticed. They are physically outside, but their attention is somewhere else, which suggests how absorbed, or perhaps how stuck, they are in thought.
The simple meal of "bread and dirt" is a striking image. It feels humble and a little bleak, and the comparison to "a country with no mother" adds a sense of loneliness, as if the speaker is cut off from something nourishing or foundational. The poem doesn't explain what that missing source might be, so readers are left to decide.
The ending turns toward doubt. The speaker wonders whether they are truly "called to art," and the trailing ellipsis leaves the question hanging. The mood is quiet, introspective, and slightly forlorn, with a gentle self-questioning that many creative people will recognize.