The intelligent human being prepares for it and seeks to obtain in his next life the best possible body, that is, a spiritual body, as possessed by those who return to the kingdom of God.
But let us understand that in terms of reincarnation, we must prepare now our next life, and our actions, our thoughts, our desires, our memories, determine what will be this next existence, and the body which will be ours.
Materialists turned to the pleasure of the senses attach a very great importance to present existence despite its ephemeral character, and so we see human beings ’Focus on the body and what goes with it. This is called the bodily conception of existence. This conception attaches not only to the body, but also to relatives, to the wife, to the husband, to the children, to the friends, to the possessions, to the homeland, and to so many other things which are extinguished when s' completes the present existence. When death occurs, the whole context of this life sinks into oblivion.
Death comes down to a sleep of about nine (9) months, the time required to fashion a new body offered according to our wishes by the laws of nature, through a particular mother.
It is simply a matter of changing the nature of our desires during our current existence, in our present body, by a knowledge that God transmits to us through his authentic servant, the spiritual master. This knowledge can be received at any stage of life, even moments before death, but the normal procedure is to see it formed from early childhood.
To avoid the danger of wasting human life and to become attached to illusions, one must, from the age of fifty or rather, become aware of the approaching death. So you have to prepare for it for a better future life. In other words, it is about detaching the mind from material concerns and fixing it on the Lord.
We must surrender ourselves to God, and serve him with love and devotion. Only this path, simple after all, will be able to lead us towards the highest stage of spiritual perfection, towards God, in his absolute and eternal kingdom. The highest perfection of the human being is to remember the Supreme Lord at the end of his life.
In other words, one has to shape his existence in such a way that gradually the remembrance of Krishna, God, the Supreme Person, marks each stage of our life.
The Supreme Lord says: