The writing prompt from NANO fiction is: Write about a character with a tradition. This can be a ritual that involves superstitions, something surrounding religion, or any other kind of thing you can think of.
By the time he reached a certain age he knew exactly what to do when his heart broke. He would take a firm grip upon his right arm with his left; then he would guide his right arm - ever so slowly and ever so carefully! - down his throat, using his limb like a precision surgical tool.
You might think that it would be difficult to do something like this without doing severe damage to your internals; but by the time he reached a certain age he could do it almost without thinking. His right arm would slide down his esophagus and brush behind the aveoli of his lungs and then it would be at its destination: his heart, beating oddly and insistently - or insistently oddly? - within the cage of his ribs.
It was simple from that point on; remember, by the time he reached a certain age he had performed this procedure upon himself tens of times. He would simply use his fingers to feel along the raw surface of his wounded heart until he located the break; then he would massage the break closed, gently pressing and folding the sad material of his heart until the break was sealed.
And then he would use his left arm to retract his arm, smiling all the while; for by the time he reached a certain age he knew that his self-operation would lead to health and success. His heart would be healed, beating steadily and in time once more, and he would be free to go back into the world and have his heart broken all over again.
I'm aping the style of a classmate of mine from a writing course; she wrote beautifully strange pieces that used grotesque metaphors to heighten inner turmoil and conflict. I'm nowhere near as good at this technique as she is; my stories tend towards the literal rather than the metaphorical, and I don't have a good enough grasp of imagery to heighten the surrealness of the tale to memorable levels.
Still, it's fun to try once in a while. And yes, I do honestly feel that a broken heart mended is simply one that is ready to be broken once more (but it's better than having a heart turn to stone).