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Śrī Īśopaniṣad
plans to remain here in this world remain here, and the devotees of the Lord, who worship none but Lord Kṛṣṇa, the Supreme Cause of all causes, reach Him in His Abode in the spiritual sky.
Here also in Śrī Īśopaniṣad, it is said that different results are achieved by different modes of worship. If we worship the Supreme Lord, certainly we will reach the Supreme Lord in His eternal Abode, and if we worship demigods like the Sun and Moon, we can reach these respective planets without any doubt. And if we want to remain here on this wretched planet with our planning commissions and our stop-gap political adjustments, we can certainly do that also.
Nowhere in authentic scriptures is it said that whatever you do and whatever you worship you will ultimately reach the same goal. Such foolish theories are offered by self-made masters who have no connection with the  paramparā , the bona fide system of discipline succession. The bona fide spiritual master cannot say that for everyone who has his own mode of worship—be it worship of the demigods or of the Supreme—it leads to the same goal. For a common man it is very easy to understand that a person starting by train from Bombay can reach the destination for which he has purchased his ticket, and nowhere else. A person who has purchased a ticket for Calcutta can reach Calcutta. But contemporary so-called masters preach that, whatever spiritual ticket you may purchase, it will take you to the Supreme Goal. Such mundane and compromising offers attract many foolish creatures to become puffed up with their manufactured methods of spiritual realization, but the Vedic instruction doesn't uphold them. Unless one has received knowledge from the bona fide spiritual master—one who is in the recognized line of discipline succession—one cannot have the real thing as it is. The  Bhagavad-gītā  says:
Thus, O chastiser of the foe, the  yoga  principles [of the  Gītā ] were known to the great kings. But, the  paramparā  system being broken, these principles appear now to be lost.