Meaning of "Won't Last Long" by Tom Petty And The Heartbreakers

The lyrics of "Won't Last Long" by Tom Petty And The Heartbreakers delve into the emotional turmoil of a failing relationship. The narrator acknowledges that they have been through this cycle of pain and disappointment before, but they continue to struggle to explain the reasons behind the constant turmoil. They plea for their partner not to let them down once again or shake them up, as they feel vulnerable and hurt. The repetition of "I'm down but it won't last long" expresses a fleeting sense of hope amidst their current despair. The references to losing half of their brain and feeling like it's not their day further emphasize the sense of confusion and detachment from reality that they are experiencing. Overall, the song captures the heartache, frustration, and longing for stability in a relationship that seems to be continuously on the brink of falling apart.