The surefire way in which to learn about your limiting beliefs is to ask yourself every day what you think about yourself, other people, work, money, etc.
Your response and interactions on a daily basis will give you a good idea of what you believe.
It’s not possible to find all your limiting beliefs and get rid of them all at one time. While it may be nice to do that, it’s too overwhelming to do at one time. No, the best thing for you is to take small step