If you are to change your thoughts, first of all, you should find out where those thoughts are coming from - only the can you change your thoughts. Your thoughts arise from your mind, and your mind is composed of the habits you inherited from your ancestors, karma, which is your life lived, and the body. The memories of your life are stored inside you as a result of the life you lived, and those memories are your mind. This is where each person's thoughts of their own conceptions and customs come from. When you discard this, your thoughts disappear. Your thoughts will change only when you eliminate the root cause of your thoughts.
-'How to go to and live in heaven, paradise, and the land of bliss while living', Woo Myung.