The song "Happiest Year" by Jaymes Young explores themes of regret, reflecting on a past relationship and acknowledging the mistakes made. The lyrics depict the speaker feeling torn and defeated, admitting that they have been fighting for the other person throughout their entire life. They confess that saying goodbye was a foolish decision, possibly made by "stupid people." The chorus expresses gratitude to the other person for being the source of the speaker's happiness during the time they spent together. They acknowledge that they took this happiness for granted and wasted it. Despite realizing their mistake, the speaker humbly kneels, asking for nothing in return. The second verse continues to delve into the complexities of the relationship, admitting that both parties caused each other pain. They admit that they used the other person and regrets their actions. However, they also confess that they were hurt by the other person. The bridge introduces a longing to go back in time and relive the moments when they were together. The speaker yearns for the past and wishes to experience the love they once shared once again. Overall, "Happiest Year" is a heartfelt and introspective song about regret, acknowledging mistakes, and longing for lost love. It conveys a sense of gratitude for the happiness that was once experienced while also recognizing the pain caused in the relationship.