Let us examine the change of wheat kernel described in this verse. The wheat kernel buried in ground under goes changes. Changes begin in its quality. Gradually it gives up its existing qualities in small quantities and achieve some new qualities . This process will not continue infinitely, at a particular point, this seed entirely giving up its old existence, acquire a qualitatively quite new existence, transforms to new life as a sprout. It dies as a seed and lives as a sprout,comes to a new stage. Continue this process and goes through different stages and at last it multiplies. Sprout becomes sapling, then plant, then blooms and bears fruit. At each stage a death happens and new self comes to existence. At each stage the quality-change leads it to its death of one stage and birth of another stage.
This is true not only in the life of personal life but also in social, political as well as economical life of human beings. The transformation of personality depends upon quantity of quality-change, other wise rate of change of quality. That is, quantity changes quality and quality changes quantity, but quality is primary and quantity is secondary.
In our life at some stages we will have to give up many things in our life to enter in to the next stage of growth, some times it might be character, possessions, some kind of relations etc, and accept quite new ones in place of these given ups. Those succeed in doing so are the successful persons in life. The situations always compel us to make such adjustments to go to next stage of growth or transformation. We have the choice before us to either go through the required process to have change or remain unchanged, being unwilling to go through these molding process.
Problems are the process which help us to kill or give up our existing self and acquire new one in the development of our lives. So those who are wise enough to use the problems shall enter to the stages of development one after another very easily and reach their goals.