1) Start with the genre promise: focused, first-person, themed
Memoir is first-person, but “first-person” is not the same as “everything happened to me.” The memoir promise is selection plus transformation. You’ll build your book around one dominant theme (grief, recovery, migration, shame, belonging, ambition, learning to breathe again, etc.) and one main arc (denial to clarity, control to trust, isolation to connection). Subplots can exist, but they must serve the theme rather than showcase side quests from your life.