You take something personally because you agree with whatever was said.

你认定某事与自己有关系，因为你认为别人说的话有道理。

Either taking something personally so maybe someone said something to you that hurt your feelings and made you emotional.

要么是认定什么事跟自己有关系，也许有人对你说了一些伤害你感情的话，让你情绪激动。

When we take something personally, we make the assumption that they know what is in our world and we try to impose our world on their world.

当我们认定某事与自己有关时，我们就会假设他们了解我们的世界里有什么，于是我们试图把我们的世界强加进他们的世界里。

Now if I was to say these things to you and you were to agree with them, you were to agree with my opinions, then that is what it means to take something personally.

现在，如果我对你说这些话，你同意这些观点，你同意我的观点，那这就是认定某事与自己有关系。