The speaker is working on letting go, and the poem builds toward who exactly they are letting go of. The first four lines move through a list: things that aren't theirs, things that aren't good for them, things that have hurt them, things that led to bad choices. Each line is plain and flat, almost like a checklist the speaker is reading to themselves.
Then the last line lands the real point: "i'm learning to walk away from you." Everything before it was a warm-up. The "you" is lumped in with the harmful things, which suggests the speaker sees this person as one of them, though the poem never says who they are or what happened.
The key word is "learning." The speaker hasn't finished walking away, and that makes the mood quiet, tired, and determined rather than angry. There's sadness in it, but also a calm sense of taking back control. The short lines and lowercase style make it feel like a private note-to-self.