Answer: This is an excerpt from Sonnet 29, written by William Shakespeare.
Step-by-step explanation:
Sonnet 29 was written by William Shakespeare, as a part of The "Fair Youth" Sequence. The sequence contains poems in which the poet directly addresses a mysterious young man.
The poem is about the speaker's feelings of depression and sadness, which he overcomes by thinking about love. The speaker admits that he feels isolated and is convinced that he is "an outcast." He envies other people for their appearance, friends, skills and opportunities, which results in his dissatisfaction. However, when he thinks about the man whom he addresses in this poem, he feels better.