How to make your story original for the audience?

Dear Friend, 

Currently I'm writing on my story. 

Armature: "You are who you choose to be." 
Plot: "Boy loves girl. Girl tries to change boy. Boy becomes what girl wants. Girl breaks up. Then, boy chooses not to become so."

This story might be effective, but it's not original. So, I started wondering: "What if I write the same story, but with the structure of an old Mongolian tale?" It works.  

The tale I've read from the book 'Land of the Dead' by Brian McDonald.' I will put the tale below.

 Past solutions might work today as well: Read and use old stories.

Things that worked before still work today.

***

Mongolian-Tale: How storytelling began among the Mongolian people.

"It tells the tale of a young boy called Tarvaa. Tarvaa’s spirit thought that his body had died of the plague, and so travelled to the underworld. However, the Great Khan of the underworld knew that Tarvaa was still alive, and so sent his spirit back. Before he left, however, he was allowed to pick out whatever item he wanted from the cornucopia of things kept in the underworld. Tarvaa’s spirit chose to take tales and legends, then travelled back and entered his body. When Tarvaa awoke, he found that crows had picked at the tissue in his eye sockets and blinded him. However, his new knowledge of stories enabled him to become a beloved storyteller."