The Seer of Lublin was a great kabbalist known for his prophesy.  From birth he was cursed with one eye that was bigger than the other, and with that he was only able to see what was wrong with people. 

He took to blindfolding himself every day to overcome this negativity; as a result he was given the power to see on behalf of others.  When we learn to see the positive in people, rather than what’s lacking, we too can become seers.