O Lord, only those who have perceived You, they alone experience supreme happiness. They alone have equanimous intellect. With praarabdha Karmas eliminated, those who are superior souls and ever devoted to you they spend their time in recitation or listening to your deeds, thus has been spoken.
Tatparya Nirnaya :- (As in the case of) collection of the taxes, diverse people are required to perform diverse activities, yaaogaaqaI- is one who desires equanimity. Those who are equanimous in intellect in performing their action abide in Sri Hari. Even from them service is expected according to the totality of work. The performance according to their ability determines, in particular, success or non-success. The one who acquires the same is called the qualified. The one who ever tries are called the aspirant. His becoming useful to creatures makes the Lord pleased. The qualified one pleases Sri Vishnu through meditation, speech, worship etc. There is no other work for him. By performance of these actions alone, Keshava becomes pleased with him, thus according to Pravritti text.
There is no contradiction here. Serenity, abidance of mind in intellect, self-control and restraint of senses, thus, in Bhagavat Puraana.