what have i become my sweetest friend

The question seems to be a line from the song "Hurt" by Johnny Cash and originally written by Nine Inch Nails. The full line is "What have I become, my sweetest friend? Everyone I know goes away in the end". It is a reflection on the singers life and the people who have left him, and the feeling of being alone and disconnected from others. The song is a powerful expression of pain, loss, and regret, and has resonated with many people over the years.