CC Madhya 13.136
yogeśvarair hṛdi vicintyam agādha-bodhaiḥ
gehaṁ juṣām api manasy udiyāt sadā naḥ
This is a quotation from Śrīmad-Bhāgavatam (10.82.48). The gopīs were never interested in karma-yoga, jñāna-yoga or dhyāna-yoga. They were simply interested in bhakti-yoga. Unless they were forced, they never liked to meditate on the lotus feet of the Lord. Rather, they preferred to take the lotus feet of the Lord and place them on their breasts. Sometimes they regretted that their breasts were so hard, fearing that Kṛṣṇa might not be very pleased to keep His soft lotus feet there. When those lotus feet were pricked by the grains of sand in the Vṛndāvana pasturing ground, the gopīs were pained and began to cry. The gopīs wanted to keep Kṛṣṇa at home always, and in this way their minds were absorbed in Kṛṣṇa consciousness. Such pure Kṛṣṇa consciousness can arise only in Vṛndāvana. Thus Śrī Caitanya Mahāprabhu began to explain His own mind, which was saturated in the ecstasy of the gopīs.