I guess only Paulo Coelho had his Zahir. 
Is this because The Zahir has to have a happy, full-filling end??
What if Esthar would have left the village when she came to know that he is coming there...?
What if she had said that she still loves Dos and wants to live with him...?
What if the narrator had to leave empty-handed with his heart full of pain flowing through his eyes....??

Who knows!!