“The men and women who have the right ideals... are those who have the courage to strive for the happiness which comes only with labor and effort and self-sacrifice, and those whose joy in life springs in part from power of work and sense of duty.”

Simplified Meaning:

People who achieve true happiness are the ones who work hard, put in effort, and sometimes give up their own comfort for the sake of others or their goals. These individuals feel joy because they take pride in their work and take their responsibilities seriously. For instance, a doctor who spends years studying and works long hours to help patients will feel a deep sense of fulfillment. Their hard work and dedication provide them with a joy that comes from knowing they are making a difference. Applying this idea, if you want to be truly happy, you need to find a purpose, work diligently towards it, and be willing to make sacrifices along the way. This approach will lead to a more satisfying and meaningful life.