Krsna says, dhiras tatra na muhyati: [Bg. 2.13] “A sober man is not perplexed at the time of death.” If you prepare yourself for death, why should you be perplexed? For example, if in your childhood and boyhood you prepare yourself nicely, if you become educated, then you will get a nice job, a nice situation, and be happy. Similarly, if you prepare yourself in this life for going back home, back to Godhead, then where is your perplexity at the time of death? There is no perplexity. You’ll know, “I am going to Krsna. I am going back home, back to Godhead. Now I’ll not have to change material bodies; I’ll have my spiritual body. Now I shall play with Krsna and dance with Krsna and eat with Krsna.” This is Krsna consciousness — to prepare yourself for the next life.
From: The Journey of Self-Discovery, by Srila Prabhupada