Well,I do not know anything about myself.I am going to ask you a question, how someone knows anything about himself?I am going to give you an example,that is the work done by one of the most popular psychologists of 20th century Sigmund Freud.I am not an expert in psychology,but let me tell you something,humans have someting called "mind".But most of the "spiritual mystics" that I have read or watched You tube videos ,I have observed one thing that is common to all of their "mysticism" or "spiritual teachings" ,that most of the humans are completely unaware of the existence of mind.And the momment we become aware that existence of mind is just like existence of "noise",a revolution happens.You can check it here,from gentelmen known as Gurdjief and P.D Ouspensky.According to psychology there is an idea of "self-concept" .In my opinion ,it is also somewhat kind of a belief.There is a possibility that a person can come to wrong conclusions.