There is no one belief system that is universally beneficial to the individual and society as a whole. Different belief systems have different strengths and weaknesses, and what works for one person or group may not work for another.

That said, there are some general principles that are common to many belief systems that can be beneficial to both individuals and society. These include:

A belief in something greater than oneself. This can provide a sense of purpose and meaning in life, and can help people to overcome challenges and setbacks.

A commitment to helping others. This can build strong relationships, create a sense of community, and make the world a better place.

A focus on personal growth and development. This can help people to become better versions of themselves, and can make them more productive members of society.

A belief in the power of forgiveness. This can help people to let go of anger and resentment, and can lead to a more peaceful and harmonious life.

Ultimately, the best belief system for an individual or society is the one that provides the most benefits and the fewest drawbacks.

There seem to be no one-size-fits-all answer, and each person must find what works best for them.