Final answer:
F. Scott Fitzgerald's description of his life in the 1920s reveals the contrast between his opulent public image and personal financial difficulties, encapsulating the wider cultural spirit of the era.
Step-by-step explanation:
F. Scott Fitzgerald described his life in the 1920s as a paradox of personal disillusionment juxtaposed with professional success. In his writing, such as 'The Crack-Up', Fitzgerald conveys the intricacies of his lavish lifestyle paired with financial struggles due to his and Zelda's spending. His experiences unabashedly mirror the era's culture—ostentatious affluence alongside individual disillusionment. Fitzgerald's work reflects a societal portrait, capturing the spirit of the Roaring Twenties with its focus on wealth, love, and the pursuit of identity.