This is the law of karma. But instead of improving your karma, karma-kāṇḍīya-vicāra, fruitive activities, if you take to devotional service and simply try to understand what is Kṛṣṇa, then you are no longer within the influence of this good work or bad work. You are transcendental. Immediately after death, tyaktvā dehaṁ punar janma naiti (BG 4.9), you are no more subjected to this gross body... (break)
...understand Kṛṣṇa. You can understand Kṛṣṇa simply by chanting Hare Kṛṣṇa mantra. Sevonmukhe hi jihvādau (Brs. 1.2.234). Simply by your service attitude, to serve Kṛṣṇa, beginning with the tongue. It is very wonderful. But utilizing your tongue, you can achieve Kṛṣṇa very easily. By the tongue. By the tongue, if you simply chant, without any offense, Hare Kṛṣṇa mantra, and by the tongue, if you simply taste Kṛṣṇa prasādam, and by the tongue, if you speak about Kṛṣṇa, yāre dekha tāre kaha kṛṣṇa upadeśa (CC Madhya 7.128), you understand Kṛṣṇa. The three business of the tongue. Tasting the prasādam, chanting Hare Kṛṣṇa mantra, and preaching about Kṛṣṇa. By these three things you understand Kṛṣṇa, and as you understand Kṛṣṇa, tyaktvā dehaṁ punar janma naiti mām eti (BG 4.9), you are transferred to the spiritual kingdom.