In truth, real life does not begin until the end of material existence, and that the spiritualist knows very well. If before dying one obtains the grace of becoming aware of Krishna, God, the Supreme Person, one immediately attains the level of the Absolute.
There is no difference between the kingdom of God and the service of love and devotion offered to Krishna. Because they are both absolute, when one engages in the sublime service of the Lord with love and devotion, one thus reaches the spiritual world. The activities of the spiritual world are all Krishna conscious. As soon as one becomes aware of Krishna, even in the present life itself, one attains the spiritual level. Anyone who has developed Krishna consciousness, or God consciousness, is already in the kingdom of God.
Spiritual is quite the opposite of matter. Also, one who engages in the service of love and devotion which he offers to Krishna, is freed from the grip of matter, and is in fact on the spiritual plane.
The wheel of material existence
The material mind that covers the soul carries it from one life form to another. This is called the wheel of material existence.
The activities of the mind under the influence of material nature are the causes of happiness and unhappiness in this world. Blinded by illusion, the soul eternally pursues its existence conditioned by matter under different names. Those who find themselves in this situation are called eternally conditioned beings. In short, the mind is the origin of conditioned existence. This is why the practice of union with God as a whole is aimed at securing mastery of the mind and the senses.
Once the mind is mastered, the senses are automatically mastered, and the soul is saved of the consequences of virtuous or ungodly action. If one places the mind at the feet of Lord Krishna, the senses will automatically be employed in his service. And when he absorbs his mind and senses in the loving and devotional service he offers to God, the individual being naturally becomes aware of Him. The one who always meditates on Krishna becomes a perfect transcendent spiritualist.
The mind is conditioned by the material nature, and in view of its very great power, it covers the individual soul and plunges it into the waves of material existence.
Anyone who wants to progress in the spiritual life must master his mind and senses.
By its very nature, the mind is very unstable and no one should befriend it. If you put your trust in him, you risk being deceived by him at any time. The first duty of anyone who wishes to progress in the spiritual life is to become master of the mind and the senses.