The worst enemy to creativity is self-doubt. Sylvia Plath Instagram sharing coming soon. Quote text and source copied to clipboard. Link to this quote copied to clipboard. More information about this quote Topic Creativity Self-doubt Author Sylvia Plath Source Letters of Sylvia Plath Medium Letter Language English Time 1953 1950s 20th century Occupation Poet Writer From United States Authentication Score 1 More information on Authentication Score coming soon. Citation Plath, Sylvia. Letter to unknown recipient. June or July 1953. Citation text copied to clipboard.