Delilah

Hi I was wondering what do Sikhs believe about words and the power of words? Is there anything in Sikhism or your holy book that says that a person's or a Sikh's words have creative/magical/fatalistic power? Like if you say something's going to happen to you or someone, then it will happen? For example, if you were to say, "I'm not going to pass that exam" or say something you were worried about happening, by you saying it, does it make it happen? Is there anything taught about that in Sikhism?