I believe it is to be happy. From the moment of birth, every human being wants happiness and does not want suffering. It is therefore important to discover what will bring about the greatest degree of happiness.
The two main categories are mental and physical. Of the two, it is the mind that exerts the greatest influence on most of us. The greatest degree of inner tranquility comes from the development of love and compassion. The more we care for the happiness of others, the greater our own sense of well-being becomes. Cultivating a close, warmhearted feeling for others automatically puts the mind at ease. This helps remove whatever fears or insecurities we may have and gives us the strength to cope with any obstacles we encounter. It is the ultimate source of success in life.
As long as we live in this world, we are bound to encounter problems. If, at such times, we lose hope, we diminish our ability to face difficulties. If, on the other hand, we remember that it is not just ourselves but everyone who has to undergo suffering, this more realistic perspective will increase our determination and capacity to overcome troubles. As a result, our own serenity and inner strength will increase.