A belief that I feel more people should have is the belief that focusing on value is the path to a fulfilled life.
If we view all people on earth as a tribe, your value as an individual is a function of how much value you bring to the tribe.
In the past, the best hunters in a tribe were valued become the food they bought to the tribe was highly valued. Being valued puts the hunters in a higher position in the tribe. In other words, because of the value, they bought to the tribe, the more value the tribe gave back to them.
When everyone is focusing on the value they can bring to the tribe everyone benefits.