The speaker is surrounded by people who say kind things: a dad who calls them brave, a mum who is proud, sisters who say they're capable, friends who care. But none of it lands. Each time, the speaker answers with "I don't feel it," and feels stupid, useless and inadequate instead. The poem suggests they are hiding how bad things really are, including a wish to stop.
The cause is a cruel inner voice that sits on their shoulder and insists everyone is lying. When it speaks, the poem switches to capital letters and short, harsh words like "WORTHLESS" and "NOTHING," so we can almost hear it shouting. The mood is heavy, lonely and exhausted, with a painful twist: the speaker hates themselves for doubting people who love them. The ending is the saddest part. The voice makes them doubt others, but most of all it makes them fear "myself," a word left stranded alone on the final line.