"Being" balanced with "Becoming" leads to peace of mind.

Being = eternal consciousness, atman, holy spirit, light, Purusha, Shiva, prana

Becoming = matter, nature, Prakriti, Kali, kundalini
It's an eternal dance where the ratio of Being to Becoming increases in the archetypal spirit space. Matter evolves into spirit. Becoming becomes being.

Put another way, Becoming is the Evolving force - the vitality of matter, the drive for change, profit, novelty, and procreation. Pretty much every time you see a snake in world mythology (from Eden to Queztacoatl to the Uraeus to the kundalini), we're talking about this force. It's inside of you, because you are made of matter.

The counterpoint to this is the divine spark, the eternal atman, the holy spirit, the connection to source, the breath of life, whatever you wanna call it - pure being, pure consciousness. You have an eternal soul and what you sow in this world, you reap in the next. We are all connected via this source.

A primary task of man and woman in this realm of duality is to reign in their serpent, become the master of it (and importantly - not suppress it entirely) to achieve balance, harmony, and find love.

Geb, the father of snakes on the bottom left, represents the Becoming force. Nut, the sky mother, represents the source of the divine spark of conscioussness, pure Being. Both forces are in balance in this picture.

In the other picture, the genders are interestingly reversed, but Shiva represents eternal consciousness that the shakti enegy (Kali) overwhelms. In this picture, the forces are out of balance, Kali (the Becoming, serpent, shakti) is trampling on her counterpart, Shiva (Being, consciousness). Sometimes the shakti overpowers conscioussness (in this case, to destroy evil).

Jesus himself likened himself to Moses’ snake on a rod (nehushtan - like the caduceus) and said “Be ye wise as serpents and harmless as doves.”