The difference between a “good eye” and an “evil one,” between a blessing and a curse, is that in the latter case, revelation happens by itself, without my preliminary efforts, and I lack the appropriate vessel. Alternatively, first I prepare the vessel, desire, and then whatever happens is revelation for me. In both cases, however, the same thing is being revealed.
If it becomes revealed without my prepared desire, vessel, I feel darkness, concealment. And if my desire becomes revealed first, I perceive the opposite: the Light, revelation. There is no other difference between a curse and a blessing.
From the 1st part of the Daily Kabbalah Lesson 8/30/2011, Shamati #110