as a child I had learned while studying science the importance of ‘equilibrium’. I do not clearly remember its definition. It meant to me the natural ability for a thing to stand up on its own – to maintain its stability. It was taught that if the center of gravity is closer to the ground, it increases the stability of anything in adverse circumstances. Like extreme push or pull, a jump or a fall etc.
Today, I find that equilibrium is equally important for human beings. What is means to me is the ability to retain our feet on the ground. Extreme emotions may tend to shake the feet but adequate control of the mind helps us develop the ability to remain on the ground.