According to Hindu scriptures, the key to a happy life is to follow the path of dharma (righteousness), cultivate positive relationships, and strive for inner peace and spiritual growth. Here are some principles one can follow to live a happy life according to Hinduism:

1. Lead a virtuous life: Perform your dharma, follow moral and ethical principles, and do good deeds.
2. Cultivate inner peace: Meditate, practice yoga, and engage in self-reflection to achieve inner peace and tranquility.
3. Live in harmony with others: Treat others with kindness, respect, and compassion. Maintain positive relationships with family and friends.
4. Seek knowledge: Acquire knowledge and wisdom through study, contemplation, and discussion.
5. Pursue material prosperity: Work hard and be productive, but do not let material wealth become the sole focus of life.
6. Pursue sensual pleasure in moderation: Enjoy life’s pleasures, but do not become excessively attached to them.
7. Seek liberation: Cultivate a spiritual practice, understand the true nature of the self, and strive for ultimate liberation (moksha).

In vedas

According to Vedas, the ancient Hindu scriptures, the key to a happy life is to follow the path of dharma (duty), achieve artha (material prosperity), attain kama (sensual pleasure) and eventually attain moksha (liberation). Here are some principles one can follow to live a happy life according to Vedas:

1. Lead a virtuous life: Perform your dharma, follow moral and ethical principles, and do good deeds.
2. Cultivate inner peace: Meditate, practice yoga and engage in self-reflection to achieve inner peace and tranquility.
3. Live in harmony with others: Treat others with kindness, respect and compassion. Maintain positive relationships with family and friends.
4. Seek knowledge: Acquire knowledge and wisdom through study, contemplation and discussion.
5. Seek material prosperity: Work hard and be productive, but do not let material wealth become the sole focus of life.
6. Pursue sensual pleasure in moderation: Enjoy life’s pleasures, but do not become excessively attached to them.
7. Seek liberation: Cultivate a spiritual practice, understand the true nature of the self, and strive to attain moksha.

By following these principles, one can lead a fulfilling and happy life, according to Vedic teachings.