• Refining the holy sparks in a way of קטנות - immature intellectual capacity. 

• Two reasons why prayer is hard for someone: 1) He's focusing on a Godly light that is covered by the worlds. 2) His Godly soul is imprisoned in the physical body. 

• Higher level of refining sparks - "The righteous eat to satiate their soul". 

• The higher refining is similar to eating on Shabbos, the pleasure from eating is a mitzvah. 

• Refining of tzadikim is peaceful and "automatic", without waging war with the physical temptation.  

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