The problem is when you expect other people to follow your higher standards, and you'd rather shortcuts yourself.
When in fact the harder and better thing to do would be to "be square with yourself and round with others" *- that is to say, be hardest on yourself about staying true to your values, but show forgiveness and consideration to others.

It is much easier to only point the finger and show contempt for others faults.
I am not perfect in that way, obviously, as I unable to go about my true objective with XoX without crossing too far into that side of things.
It is difficult when you want to help or show the way for someone to improve. The ego must be monitored, and you have to know when you are just trying to make yourself look or feel better, and when you are actually trying to "show tough love" so to say, and be harsh out of real concern for wellbeing.