The poem starts with an ordinary act: putting on shoes. But the speaker treats it as a small act of courage, saying they "must not fear." Getting dressed becomes a way of stepping into a role, which fits the title, "Self-impersonation." The speaker seems to feel that being themselves is something they have to perform, almost like acting.
The "audit" suggests being examined or judged, whether by an institution or by one's own inner critic. Yet the speaker calls it "a clear bell," a sound that wakes you up rather than threatens you. The fear gets turned into something bright and almost welcome. The last lines push this further: playing ourselves is "an adventure." The mood is quiet, wry, and lightly hopeful. Nothing dramatic happens, but the poem suggests that facing daily scrutiny, and the odd feeling of acting like yourself, can be approached with curiosity instead of dread.