Only through divine grace can one be peaceful and happy. People celebrate the advent of the New Year with singing and dancing. That enthusiasm and happiness are momentary. What man needs is permanent peace and happiness. He has to undertake sacred activities in order to attain permanent happiness.
Happiness results only from difficulties.
Pleasure is an interval between two pains. It is impossible to experience pleasure without pain. You cannot expect mangos by sowing a neem seed, and vice-versa. As is the seed, so is the fruit. Similarly, as is the feeling, so is the result.