Vyasadeva, after writing so many books, he could not find peace of mind. So he was sitting, morose, & his spiritual master, Narada, came there, asked him, - My dear Vyasa, you have done so much in writing for the welfare of society. Why you are not happy?

Expressions researched:
"Vyāsadeva, after writing so many books, he could not find any peace of mind. So he was sitting, morose, and his spiritual master, Nārada, came there, asked him, "My dear Vyāsa, you have done so much in writing for the welfare of the society. Why you are not happy"

Lectures

Srimad-Bhagavatam Lectures

Vyāsadeva was empowered by his guru, Nārada. Vyāsadeva, after writing so many books, he could not find any peace of mind. So he was sitting, morose, and his spiritual master, Nārada, came there, asked him, "My dear Vyāsa, you have done so much in writing for the welfare of the society. Why you are not happy?" Vyāsadeva replied, "Yes, my lord, I think I have done so much things, but I am not happy.".

740118 - Lecture SB 01.16.22 - Honolulu

Writing book is not a whimsical, whatever I like. No. You must be empowered by superior authority; then you can deliver the right things. So Vyāsadeva was empowered by his guru, Nārada. Vyāsadeva, after writing so many books, he could not find any peace of mind. So he was sitting, morose, and his spiritual master, Nārada, came there, asked him, "My dear Vyāsa, you have done so much in writing for the welfare of the society. Why you are not happy?" Vyāsadeva replied, "Yes, my lord, I think I have done so much things, but I am not happy." So he was instructed that, "You have written so many books, but not about the Supreme Personality of Godhead. I admit that you have written so many books. So because you have not described about the superiority or glories of the Lord, therefore you are unhappy." So after that instruction—that means after his writing of the Vedānta philosophy—he was also not happy. But when he wrote Śrīmad-Bhāgavatam under the instruction of Nārada, he became happy.