Equanimity develops slowly, it’s not something that we can just turn on. It's like a fruit ripening on a tree—it takes time, day by day by day, living with awareness. We don’t grow wise just by being alive. We actually have to pay attention. We have to bring awareness, intelligence, and curiosity to our life, looking closely at what happens, in order to learn. If we do that, over time, wisdom grows, and we mature in the wise, balanced perspective of equanimity. The brahmavihāras, these four qualities, are all connected. They’re just different sides, different facets, of the heart. And equanimity plays a very important role in each of the others. It balances them, it brings a wise perspective to them.
 
Equanimity: A Wise and Balanced Perspective