Halcyon by Ellie Goulding is a song that delves into themes of renewal and searching for inner peace after going through hardship. The term 'Halcyon' is used to symbolize a time of serene happiness, which contrasts with the turbulence that the singer describes experiencing. Throughout the song, Ellie Goulding touches upon her emotional journey, the struggle to find calm, and the hope for a brighter, more peaceful future. Key moments in the song include the imagery of overcoming dark times and the feeling of resurgence as she searches for solace. Lyrics like 'it's gonna be better' encapsulate the central theme of hope and resilience.