Questions
Q: Self delusion is so easy. We have all made so many mistakes in the past. How can a person possibly know with certainty that he is not mistaken?
A: When knowledge and wisdom is acquired, truth is seen.
Q: It is all very well you telling me this, but how do I know whether you possess such wisdom as to be able to help me on this matter?
A: You yourself must attain wisdom before you can judge the wisdom of others. There is no other way.