What describes shakespeare in sonnet 73?

Shakespeare describes himself in Sonnet 73 as "that time of year thou may'st in me behold / When yellow leaves, or none, or few, do hang / Upon those boughs which shake against the cold, / Bare ruined choirs, where late the sweet birds sang." This imagery suggests that Shakespeare is in the winter of his life, and that his creative powers are beginning to wane. He compares himself to a tree that has lost its leaves, and to a choir that has fallen silent. This suggests that he feels a sense of loss and regret, and that he is aware that his time is running out. However, the poem also contains a note of defiance. Shakespeare asserts that he will not give in to despair, and that he will continue to create poetry even in the face of adversity. This suggests that he is still determined to make the most of his remaining time, and that he is confident in his ability to produce work of lasting value.