Persevering is being used as a verb. verbs are action words, to persevere is an action. noun is a person place or thing, adjectives describe nouns or other adjectives, adverbs describe a verb.
The answer is emjabment. Based on the lines from Patricia Jabbeh Wesley's "One Day", it can be seen that she uses enjabment when creating her own structure. Enjabment, in poetry, refers to the continuation of one poetic line to the next line without the use of punctuation.