The Lord suggests that we attain the spiritual world in the following manner (BG 15.5):
- nirmāna-mohā jita-saṅga-doṣā
- adhyātma-nityā vinivṛtta-kāmāḥ
- dvandvair vimuktāḥ sukha-duḥkha-saṁjñair
- gacchanty amūḍhāḥ padam avyayaṁ tat
That padam avyayam, or eternal kingdom, can be reached by one who is nirmāna-moha. What does this mean? We are after designations. Someone wants to become "sir," someone wants to become "lord," someone wants to become the president or a rich man or a king or something else. As long as we are attached to these designations, we are attached to the body, because designations belong to the body. But we are not these bodies, and realizing this is the first stage in spiritual realization. We are associated with the three modes of material nature, but we must become detached through devotional service to the Lord. If we are not attached to devotional service to the Lord, then we cannot become detached from the modes of material nature.