Becoming begins as a story of a Black girl from Chicago learning to build a life on her own terms, then expands into the uneasy business of becoming a wife, mother and political symbol.

Published in 2018, the memoir belongs to the political autobiography tradition but quietly alters its usual center of gravity. Obama is less interested in documenting power than in examining what power does to an ordinary private life, particularly to a Black woman whose identity is repeatedly interpreted for her. Its strongest cultural contribution is this insistence on self-definition: the book treats marriage, motherhood and public service as roles that must be negotiated rather than identities that arrive fully formed.

The early sections are the most alive. Obama writes with warmth, humour and a strong instinct for revealing character through domestic detail. The White House chapters are necessarily more constrained, and the prose becomes broader and more ceremonial as public duty overtakes private observation. The contrast is revealing rather than accidental.

The book's reservation is its tendency towards inspirational language when its more particular memories are already doing the work. Some passages sound shaped for reassurance rather than discovery.

Still, its cultural force lies in making the supposedly supporting figure of a presidential memoir its primary subject.

A generous, carefully made memoir that is strongest when it forgets it is supposed to inspire.