When you develop thoughts of equanimity to overcome disappointment, grief, or just general irritation of the world, you have to learn to accept the fact that there’s the potential to act skillfully to put an end to suffering.

"People do unskillful things all over the world all the time. This is the world we’re born into — and this is one of the relatively good ones. So equanimity cannot be the goal. But the fact that the reflection on equanimity is also the same as the reflection that leads to a motivation to want to practice the path [that we're owners of our kamma], shows that when the Buddha teaches us equanimity, it’s not just a general indifference. When you have equanimity for all beings, it’s not just saying, “Well, who cares?” It’s more to focus you. There are a lot of things you cannot change in the world, but there are some things that are within your power, and the path is something that’s within your power. It’s something you can do. That, the Buddha says, is a type of action. It’s the type of action that leads to the end of action, but it’s a choice you can make.

So when you develop thoughts of equanimity to overcome disappointment, grief, or just general irritation of the world, you then want to think about it a little bit further to take it beyond simply learning how to accept things as they are. You have to learn to accept the fact that there are potentials as well. There’s the potential to act skillfully, so skillfully that you can put an end to suffering. That’s there, too."

~ Thanissaro Bhikkhu "Equanimity & More"