What is the best prayer

There is nothing called best, better prayer or best prayer. Prayer itself is best. You can’t choose, "I will choose a better prayer". No. Prayer is like a cry. It’s like asking, "How can I cry better? How can I laugh better?" There is no way. 

Prayer is deeper than your emotions. It is just an expression of your innate need or innate gratitude. Yes! We are so used to choosing things and we try to choose even prayers, no. Prayer is an expression of the deepest anguish and or the deepest gratitude. Let it happen, let it flow.