You think you're back on deck, dry and comfortable in your change of clothes, when the fish catch up with you to let you know you've dived into the deep again.
Where's your face mask? Your depth gauge? Your lifeline? All on the boat where you left them, along with your brain.
So cage up your heart! Keep it under constant guard. It slips away like a wish, disobeys like a child. Throw away the keys; why didn't you lock the gate in the first place? The heart is a deceitful girl; she makes you tell lies so you don't realise she's gone off again, on an eagle's wing, delightfully seeking the worst spot to take the plunge. Chide the monster. Hose it down with oil, so that it loses the ability to attach. Dehydrate it; let it squeeze itself dry, so that there's nothing left but the blackened walls and the stone.
You don't want to be anyone's doll. You're a heck of a gem. Don't let the child reduce you to a copper-coated soul and desperate tunes. Stop being that pathetic dog. Have some backbone; show yourself who you can be.