If you do not perform a certain action, you do not experience its result. When soldiers go to war, some die and others survive. The latter are not saved because of their courage, but because they have not created the cause of losing their lives in that war. In the press we can find many similar stories daily. When a terrorist plants a bomb in a building, some die and others are unharmed although they have been close to the explosion. In the air or when a volcano erupts accidents, some people die and others miraculously escape. In these cases, they are surprised survivors have escaped death, while others who were with him had perished.
The actions of sentient beings never lost even a long time before experiencing their results. The shares will not fade by themselves or can transfer to the other, trying to evade our responsibility. Although the intentions that initiated our past actions have ceased, potential they left in our minds will not disappear until maturity. The only way to eliminate the harmful potential before they ripen as suffering is to practice purification by means of the four opponent powers.
Unfortunately, it is easy to lose our virtuous potentials, because if we do not dedicate our good deeds, can be destroyed in a moment of hatred. Our mind is like a large chest and our virtuous actions, like precious jewels. If you do not protect prayers of dedication, when we become angry we will show our treasure as a thief.