You take this orange and you squeeze it as hard as you can squeeze it and you ask yourself: What will come out? What comes out when you squeeze an orange? Orange juice. Never, and no matter how many times you squeeze it, will apple juice come out.
Then the next question is: Why? Why, when you squeeze an orange as hard as you can squeeze it does orange juice come out? The reason that orange juice comes out when you squeeze it, is: That is what is inside.
Now you extend the metaphor and someone squeezes you; that is someone says something about you that you do not like or someone behaves towards you in a way that you find offensive. Out of you comes anger, hatred, bitterness, tension, fear, anxiety, stress and immediately you say the reason that comes out of me is because of how he said it or the way she said that or because they did that.
But the truth is, the reality is, that what comes out, is what is inside. And if you do not like what is inside, you can change it.