The problem with believing what other people say is that you don’t know the source.
How do you know, for example, that the source, the person talking to you, the person telling you how you should live your life doesn’t have an agenda, an agenda that has nothing to do with what’s best for you?
The moral here is that unless you know the source, you know the heart, spirit and motivation of the person talking to you, there is no point whatsoever in you listening -- why would you? Why would you even waste one minute listening to someone who hasn’t proven their integrity to you?
And yet, people do it all the time, torturing themselves trying to live up to the expectations of a source whose integrity is suspect at best, dangerous at worst.