So, for example, you have this idea "English is painful and boring." And when you think of this belief, where does it come from? Well, you think of all these past experiences.You think of the time in middle school where your teacher corrected your mistake and you felt terrible.And you think of maybe the bad grades you got on the test or all the red marks on your English papers.And you start adding more and more and more memories, more of these negative experiences, these negative references.And if you get enough, you will develop a very, strong, deep, powerful belief "English is difficult.English is painful.I'm not good at English.” So to weaken these, you just have to question the references.