The literary device used in these lines is Personification.
The personification is a figure of speech in which a thing is given human attributes. The non-human objects are portrayed in such a way that we feel they have the capacity to act like human beings. This device makes the piece more interesting to read and makes it more sensitive to the reader.
Answer:
I won't write 100 words for the answer but the theme is the process of becoming.
Provide personal experience or know someone whose experience can relate.
favorite singer should be your answer I hope this helps