Whenever he delivered a khutbah on the mimbar, and feared being amazed by himself; he would terminate it (i.e. the khutbah)
And whenever he wrote a letter and feared amazement by way of it; he would tear it.
And he would say: ”O Allaah! I seek refuge in you from the evil of my nafs.’‘
Source: Al Fawaa-id of Imaam Ibnul Qayyim (rahimahullaah) (page: 225)