Strand utilizes these multiple metaphors to illustrate the release of four of the five senses of the speaker: sight, touch, taste, and smell. The speaker gives up his "eyes", "tongue", "smell" and "hands" which are all associated with the senses, which can be associated to memory. If this was Strand's intention, the speaker is giving up his senses in order to forget and dismiss memories in order to start and establish a new life, but more importantly a new self.
In line 6, "I give up my lungs which are trees that have never seen the moon", the speaker is expressing the moments he did not take advantage of when he had the chance. Within the lungs lies the bronchial tree, which assists in the ability to breathe, and directly relates to the metaphor comparing the lungs of the speaker to trees. In this case of the speaker he is surrendering the few breaths he has taken and the ones that are to come in the future. Like the cliche saying, "life isn't about the amount of breaths you take, but the moments that take your breath away", the speaker did not take advantage of seizing these potential moments that could've improved not only his quality of life, but also his memories that he is willing to surrender by giving up his senses.
"I give up my hands which are ten wishes", line 8, refers to the speakers' fingers and how they each represent his dreams and aspirations. Strand's choice of the word "wishes" implies that the speaker has yet to reach or accomplish these desires and he no longer has the perseverance to do so. With that being said, line 9 mentions the speaker's repudiation of his arms "which have wanted to leave [him] anyway". Traditionally speaking, a man's arms represent diligence and hard work. A man's strength is encompassed through his arms. The speaker's arms represent the hard work he has put in throughout his life yet his "ten wishes" have yet to be granted or met.