A fully responsible man should always be conscious of the prime duty of the present human form of life. The activities to meet the immediate necessities of material life are not everything. One should always be alert in his duty for attainment of the best situation in the next life. Human life is meant for preparing ourselves for that prime duty.
The purpose of life is to clean the environment of our heart.
God is the center of everything. When we truly, honestly strive to make him the goal of our life, God will be pleased with our endeavor even if we fail. He will give us all help, and even in the difficulties we endure in the process, he will bring us closer and closer to him.
Goal of life is not to become great but to become an instrument in the hands of great persons.
Children and foolish people are attached to materialistic, fruitive activities, although the actual goal of life is to become free from such activities. Therefore, the Vedic injunctions indirectly lead one to the path of ultimate liberation by first prescribing fruitive religious activities, just as a father promises his child candy so that the child will take his medicine.