According to Shad Helmstetter, Author of "What to Say When you Talk to Yourself" and other books like it; it's science. The more your brain receives the right repeated messages, the more you wire your brain to succeed. Listening to affirmations literally re-wires your brain. The key is repetition. Listen every day for 21 days like I did and see how your long-held habit of self-sabotaging dissipates and is replaced with more effective thoughts and actions.
Try this free podcast as a starting point. https://open.spotify.com/episode/4zjDsE0yQEWbKRZrtuz7J2?si=bT6tS5yFR4SUvX8vsL3GCA