The main criterion for human values, by which their hierarchy and importance are determined, should be some integrated supreme value embodying the "ideal life of humanity." Such is arguably the "complete well-being and flourishing of humanity."
Before denying scientific knowledge about the origin of the human being, first investigate how these facts were collected and study them to understand what they convey.
Desiring a stable, good mood? It's in an active life, personal daily achievements, the ability to savor beauty and value, and the ability to rejoice in the development of your surroundings and the world at large.