Thanissaro Bhikkhu on Equanimity

"Remember that when you’re reacting strongly to something outside, or even just reacting to little things that come in throughout the course of the day, it’s not that they’re moving in on you. You’re going out and feeding on them. The earth doesn’t feed. The earth just notices and stays solid. When the breath energy in the body is solid, it helps give you that quality of mind that’s like earth. Again, this doesn’t mean you sit there and just take whatever comes. But you’re in a much better position to see what really needs to be dealt with and what doesn’t, which issues are important and which are not. In particular, you get to see your own mind in action. Because there will be parts of the mind that are still not like earth, and they’ll want to react. But if you can side with the earth side of the mind, you can see those reactions for what they are. See how they’re a waste of energy; see how they muddy up your thinking, muddy up your powers of observation. So when the Buddha talk...

"The Buddha also talks about the mind being expansive like the earth when you’re meeting with difficult situations in life. People say horrible things to you. They lie about you or say mean things deliberately to hurt your feelings. They lie about people you love. They hurt people you’re concerned about. They attack you physically. Or, unrelated to what anyone else does, you simply experience really severe pain. The Buddha says, “Make your mind large like earth.” There’s no way for anyone to do anything to the earth to prevent the earth from being itself. They can dig into it, spit on it, urinate anywhere or even demand the earth be without earth, but that doesn’t change the nature of the earth, because earth is so large and expansive. In the same way, you want your goodwill [mettā] to be large and expansive like the earth." ~ Thanissaro Bhikkhu "A Mind Like Earth (2011)"

"The Buddha also talks about the mind being expansive like the earth when you’re meeting with difficult situations in life. People say horrible things to you. They lie about you or say mean things deliberately to hurt your feelings. They lie about people you love. They hurt people you’re concerned about. They attack you physically. Or, unrelated to what anyone else does, you simply experience really severe pain. The Buddha says, “Make your mind large like earth.” There’s no way for anyone to do anything to the earth to prevent the earth from being itself. They can dig into it, spit on it, urinate anywhere or even demand the earth be without earth, but that doesn’t change the nature of the earth, because earth is so large and expansive. In the same way, you want your goodwill [mettā] to be large and expansive like the earth." ~ Thanissaro Bhikkhu "A Mind Like Earth (2011)"