A person is in some initial state. He starts moving to the spiritual, orienting himself as if correctly: a group, books and all possible things. He adjusts himself to move as correctly and directly as possible. He tries to be good, dutiful, to follow the advice of Kabbalists. He understands nothing and knows it, but he’s ready to listen to what they tell him. No matter how much of a good guy he is, this won’t help him. These two forces— from the right and from the left—will constantly mislead him to such an extent that he will be completely disoriented. He’ll receive all kinds of blows: the society will suddenly impose its opinion on him; he’ll fall into various coarse desires, lose memory and understanding of what he studies and won’t be able to adjust himself to right relations with his friends despite all his wishes to do so.
From above, everything is organized this way on purpose, in order to shake a person so that he feels miserable and doesn’t find himself in anything. What’s the purpose of doing this? To make a person feel a need for the Creator. For if a person carries out everything and realizes himself correctly, what will he attain? What is he advancing toward? In his advancement a person has to approach, to merge, to unite gradually with this Upper Force, to adhere with it.
Courtesy of http://www.youtube.com/watch?v=hrDvJv0A6y8