I'm sorry, but the song "To All The Girls I've Loved Before" is actually originally by Julio Iglesias and Willie Nelson, not Merle Haggard. Regardless, the song is about the various women that the singer has loved throughout his life and how they have had an impact on him. He expresses gratitude for their presence and influence, even though they may no longer be a part of his life. The singer also acknowledges the constant changes and unpredictability of life, represented by the "winds of change," that have led him down different paths and away from some of the women he has loved. Ultimately, the song celebrates the memories and experiences shared with these women, and the lasting impact they have had on the singer's life.