There is a difference between discernment and judgement.  Further more there is a fine line between them.  I believe you can and should discern that which you encounter in our lives and things in our lives.  I also believe we should not and can not judge anyone. So what is the difference.  In the process of discernment, if the examination includes a comparison and yourself, you have reached the line.  And the moment you think yourself as being better you have crossed the line.  The difference between examination and condemnation, the difference between discernment and judgement is comparison to self.