We have to give up our this sense gratification process, and that is the teaching of Lord Caitanya. And Caitanya Mahāprabhu practically demonstrated how to adopt that life of pure sense gratification, or pure utilization of the senses. He said, jīvera svarūpa haya nitya kṛṣṇa-dāsa (CC Madhya 20.108).
Jīvera svarūpa haya means the real nature of the living entity is eternal servitor, eternal servant of Lord Kṛṣṇa. The same thing what Kṛṣṇa taught in the Bhagavad-gītā, Caitanya Mahāprabhu taught also in His . . . this Bhāgavata-dharma teaching, and practically He showed how to do it. That is His specially.
Lord Kṛṣṇa said, sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja (BG 18.66):
"You give up all your material engagements. Simply just surrender unto Me. I shall give you all protection from all reaction of your past sinful activities." Because we are creating our next body in this life. So if we become sinful, or if we act only sinful activities, then we get next body a very lower class of body, even as the germ in the stool. You see? There are so many varieties of bodies. And if we act nicely, piously, then we get better body. Ūrdhvaṁ gacchanti sattva-sthāḥ.