Most negative core beliefs are unconscious.  The first two articles offer great insight to core beliefs, some of which you may not have heard.  Then, the next articles detail, step by step, how to create and use a 'thought log.'  Using the 'thought log' tool can have dramatic results in lowering anxiety and helping us feel better.

Core Belief articles  https://drpatrickkeelan.com/addictions/identify-negative-core-beliefs/ https://www.wellbeing.com.au/mind-spirit/mind/core-beliefs-negative-mind.html About Thought Logs https://ibpf.org/putting-your-thoughts-on-trial-how-to-use-cbt-thought-records/ https://www.psychologytools.com/self-help/thought-records/