"Fearless" is characterized by its deeply personal and autobiographical lyrics, which tackle themes of love, heartbreak, self-discovery, and empowerment. Sullivan's songwriting is marked by its honesty and vulnerability, as she draws from her own experiences to craft relatable and authentic narratives. Tracks like "Need U Bad" and "Bust Your Windows" showcase Sullivan's ability to convey the complexities of relationships, while songs like "Lions Den" and "In My Head" demonstrate her capacity for introspection and self-awareness.