Our physical body also renews itself continuously with cells constantly being produced, and then replaced to ensure our body functions optimally.
Many of us fear change simply because our first experience of change at birth was traumatic and full of pain and struggle. Birth is the moment when we metamorphose from a water mammal to an air breathing mammal. It is when we first encounter the kingdom of opposites; light & dark, hot & cold, up & down, hungry & satisfied, safe & not safe. Our first breath initiates these monumental physiological changes. The in breath and the out breath, forever destined to be their opposite. Our emergence from the womb introduces variation, and the cutting of the cord is the instant we become an individual, no longer part of our mother's physiology. Forced methods of birth often mean that this phenomenal process of change happens in shock, with the baby experiencing physiological pain, under nourishment (if the cord is cut too early), an assault on the senses, and fear as they register 'unsafe'.
We are conscious at birth and we are registering the experience. Although our cognitive proceses are undeveloped, we respond to the primal instinct of survival that is triggered by fear for our physical safety. If we look at the way most babies are born, we are crazy to think that it does not cause an effect. The pre cognitive brain then associates change with 'not safe' and we develop a resistance to change. Once we understand that our resistance to change comes from an old subconscious thought pattern we then allow ourselves the choice of taking Socrate's advice and focussing our energy on building the new rather than fighting the old.
The more individuals that embrace change, the more we will be able to create the changes that need to occur on a global scale if we are to ensure the sustainablility of the human race. We have reached a place in our evolution that is no longer comfortable and we cannot continue to assault the earth, our bodies or each other. Greed and separatism need to be replaced by compassion and unity. If we fail to heed the need for consciously created change, we may find that 'life' knocks it down so we are forced to build something new.