Explain how word choice contributes to the meaning and tone of Anne Sexton's poem, "Young."

In the poem entitled "Young" by Anne Sexton, it about an old lady writing a letter to herself, She was very sad that she wanted to go back to her childhood. The words being used by the author was very clear that convinced the reader that old lady was very sad, she is feeling empty and sorrow is the only feeling that she could feel.