The Book of Zohar, Chapter “Truma (Donation),” Item 443: The judgment of the punishments of Hell is to sentence the wicked there. Why are they sentenced in the judgment of Hell? Hell is a fire that burns days and nights, like the wicked, who warm themselves in the fire of the evil inclination to violate the words of Torah. With each warming that they warm themselves in the evil inclination, the fire of Hell burns in them.
Hell is the stages of the revelation of egoism as evil, when a person feels himself as a receiver, and the fire of shame burns him. This fire urges us to correct ourselves.
Moreover, in this state of Hell, a person has everything except the property of bestowal, and that is why he suffers. I have all the abundance, fulfillment for my egoism, but I do not wish them. I want to be in bestowal because this makes me close to the Creator. I do not want to be a receiver! This is what Hell is.
From the 2nd part of the Daily Kabbalah Lesson 7/9/2011, The Zohar