The poem is one long list of demands, each starting with "Stop." The speaker seems to be a young person, probably a girl, talking to a relative or someone close, perhaps a parent or an older family member. The complaints are painfully familiar: being compared to cousins and other girls, being blamed for bad grades and for someone else's bad days, being embarrassed in front of classmates, and having choices about friends and partners made for her. Near the end she turns the blame around with "Stop being insecure," which suggests she sees the criticism as coming from the other person's own hurt.
The repetition makes the poem feel like a pile of hurts that has been building for a long time. The tone is tired, angry, and a little desperate. Then comes the short last line, "I tried." It is quiet after all the commands, and it feels like exhaustion or giving up. The mood is heavy and sad, but the plain, direct voice makes it feel honest.