Your entire progress in life, health, wealth, relationships depends on dismantling the beliefs that you believe are true but are not actually working for you. Then embracing the beliefs that you believe are false and are actually good for you.
Your improvement, development and appraisal that you make in life is directly proportional to the number of times you destroy the limiting believes that created walls around your mind. Those walls need to be constantly broken to see a the other side of the world which may have a better life for you.
*Do read the Disclaimer