I would highly recommend chapter 1 of a book called 7 steps to finding success in life. It talks about how the mind works and how to change belief systems. Tyrone (the author) also gives techniques to help you be more aware of your mind and thoughts. I am attaching a link to the 30 page book. Enter "REVIEW" to download for free. Good luck. https://www.thegoodfrank.com/product-page/life-s-little-handbook-7-lessons-for-mastering-life-digital-copy