I think this song is talking about the end of a relationship or the point in a relationship when you're ready to move on, but will always love this person who you are leaving behind. She's saying that's she's been around the block, did her thing, and the man she's with isn't making her happy anymore. He's a hard man to love, he gets angry and rages, he's "crazy" and she herself is a hard person to keep up with.
She knows that they can no longer be together because they both no longer bring each other happiness, but she wishes him well.
I think this song is talking about the end of a relationship or the point in a relationship when you're ready to move on, but will always love this person who you are leaving behind. She's saying that's she's been around the block, did her thing, and the man she's with isn't making her happy anymore. He's a hard man to love, he gets angry and rages, he's "crazy" and she herself is a hard person to keep up with.
She knows that they can no longer be together because they both no longer bring each other happiness, but she wishes him well.