By simply attempting to realize God, one is guaranteed birth in a wealthy or aristocratic family

In the Bhagavad-gita (6.41-43) it is stated that a man who enters upon the path of self-realization but does not complete the process, despite having sincerely tried to realize his relationship with God, is given a chance to appear in a family of suci or srimat. The word suci indicates a spiritually advanced brahmana, and srimat indicates a vaisya, a member of the mercantile community. So the person who fails to achieve self-realization is given a better chance in his next life due to his sincere efforts in this life. If even a fallen candidate is given a chance to take birth in a respectable and noble family, one can hardly imagine the status of one who has achieved success.

– Srila Prabhupada, Sri Isopanishad Mantra 3