What connotation does the word struggle have that adds to poems tone?

The connotation of the word "struggle" adds a sense of difficulty, hardship, and effort to the poem's tone. It suggests that the speaker of the poem is facing challenges and obstacles in their life or in the pursuit of their goals. This connotation creates a tone of determination, resilience, and perseverance as the speaker confronts and works through their struggles. The use of the word "struggle" can evoke empathy and compassion from the reader, as it acknowledges the challenges that the speaker is facing and the effort required to overcome them.