Hal Ketchum's song "You Can't Go Back" is about the journey of life and the idea that once you leave a certain phase or place, you can never fully return to it. The lyrics depict the protagonist leaving town with only a guitar and a melody in their mind, symbolizing their pursuit of a dream or passion. Throughout their journey, they face challenges and temptations but learn to make better choices, as indicated by the line "By fortune and the grace of God, I learned to just say no." The song acknowledges that mistakes have been made and things have been lost along the way, but emphasizes the importance of moving forward and not dwelling on the past. The lyrics also highlight the gratitude towards the people and places encountered on the journey, recognizing the impact they have had. The phrase "Hopefully I've left a little something in return" suggests the protagonist's desire to leave a positive mark on their path. Overall, "You Can't Go Back" encourages listeners to embrace the present moment and the experiences that shape their lives, instead of dwelling on what cannot be changed. The repetitive refrain "You can't go back" reinforces the theme of accepting and embracing the passage of time and the forward motion of life.