One can see enlightenment among the elderly at pilgrimage sites in India, especially in Vrndavana. There one sees many old people visiting temples with intense devotion early in the morning. Hundreds of old people walk the circumambulation (parikrama) paths despite physical debilities. Some are bent nearly double! Someone might criticize that these people are not being provided with the Western medical treatment that could add a few years to their lives or ease their pain. But the sincere babajis and widows of Vrndavana who somehow make their way every morning to see Krsna in the temples and who call out “Jaya Radhe!” are actually fortunate and most intelligent. They are taking the krsna-rasayana, the elixir that will grant them eternal life in Krsna’s spiritual abode. The Vedic sastras recommend that one drink this elixir from the beginning of life, but even if one neglects to do so earlier, one should by all means drink it during the waning days of life and thus cure the disease of repeated birth and death.
From the commentary to Mukunda-mala, mantra 37 The commentary to Mukunda-mala was started by Srila Prabhupada and completed by SDG