What Is a Prayer?
What does it mean that ‘The Lord heals the brokenhearted’? It is known that man’s essence is his heart. The heart is the Kli (vessel) that receives the Kedusha (holiness) from Above, as we learn concerning the breaking of the vessels—if the Kli is broken, anything that is placed in it will leak out.
Similarly, if the heart is broken and the will to receive governs the heart, the abundance cannot enter it because everything that the will to receive receives goes out to the Klipot (shells). This is called “the breaking of the heart.” Hence, when one prays to the Creator and says, “You must help me because I am worse than everyone else since I feel that the will to receive is governing my heart, hence nothing of Kedusha can enter my heart. I want no luxuries, but simply to be able to do something in order to bestow, and I simply cannot. Therefore, only You can save me.”
By that, we can interpret what is written (Psalm, 34), “The Lord is near to the brokenhearted,” to those people who ask of the Creator to help them make their hearts unbroken, but rather whole.
– Rabash, The Rungs of the Ladder, “Return O Israel unto the Lord Your God”