Core beliefs
Core beliefs can significantly impact automatic thoughts in a given situation. For example, if I hold the core belief that I am not a good speaker, and I speak to a colleague at work, I may have an automatic thought that they did not understand what I said, and I might give up on my opinion or discussion. On the contrary, if I modify that core belief and believe that I am a great speaker, the automatic thought is more likely to be positive, and my response thereafter will also likely be positive.