The speaker is a young person who spends recess walking alone, and the poem opens with the small lie that covers it up: "I'm bored." When others scoff and walk away, the speaker admits, quietly, "That hurts a little." That understatement sets the tone. The pain is real, but the speaker tries to keep it small.
Underneath, there is a lot going on. The speaker is heartbroken over someone who doesn't love them back, and feels cold all the time. They are also mocked for their clothes, and their private secrets get whispered around. The lines grow shorter and more halting as the poem goes on, which makes it feel like a confession being pushed out bit by bit.
The mood is raw, tired, and sad. The speaker learns that being yourself and even loving yourself can be painful. The closing question, "Is it all even worth it?", is left unanswered, and it reads as a real cry for someone to notice and listen.