Lord Krishna says that he will take us to Vaikoontha . When you worship Lord Krishna, your chit will go to Vaikoontha , so you don't have to do anything. Then no other tendencies of the chit will arise. When all the tendencies become koonthit (bland and weak), you will have a face free of tension. Otherwise, you will see a great deal of tension on his face. The tendencies of the chit create tension whenever they go places.