3. - "Wishing me like to one more rich in hope"
- "Featur'd like him, like him with friends possess'd"
- "Haply I think on thee, and then my state (Like to the lark at break of day arising / From sullen earth."
The last quote is the metaphor. It is comparing the state of the poet (very bleak) to that of a bird, rising at the break of day. This is to further the image that the poet's state rose up from bleak, and sullen, to happy like that of the lark at day-break.