If the requisite causal conditions for experiencing interior joy are lacking there will be no opportunity for the occurrence of suitable external conditioning factors or, even if these external conditioning factors are present, it will not be possible for the person to experience the joy that would otherwise be his. This shows that inner causal conditions are essential in that these are what principally determine the realization of happiness (and its opposite). Therefore, in order to achieve the desired results it is imperative for us to accumulate both the cause-creating external factors and the cause-creating internal (karmic) conditioning factors at the same time.

To state the matter in simple terms, for the accrual of good inner (karmic) conditioning factors, what are principally needed are such qualities as having few wants, contentment, humility, simplicity and other noble qualities. Practice of these inner causal conditions will even facilitate changes in the aforementioned external conditioning factors that will convert them into characteristics conducive to the arising of happiness. The absence of suitable inner causal conditions, such as having few wants contentment, patience, forgiveness and so on, will prevent one from enjoying pleasure even if all the right external conditioning factors are present. Besides this, one must have to one's credit the force of merits and virtues accumulated in past lives. Otherwise, the seeds of happiness will not bear fruit.

The matter can be put in another way. The pleasures and frustrations, the happiness and suffering experienced by each individual are the inevitable fruits of beneficial and evil actions he has perpetrated, thus adding to his store. If at a particular moment in this present life the fruits of a person's good actions ripen he will recognize, if he is a wise man, that they are the fruits of (past) meritorious deeds. This will gratify him and encourage him to achieve more merits. Similarly, when a person happens to experience pain and dissatisfaction, he will be able to bear them calmly if he maintains an unshakable conviction that, whether he wishes it or not, he must suffer and bear the consequences of his own (past) deeds, notwithstanding the fact that normally he will often find the intensity and extent of his frustration hard to bear.