Answer: Any state, the left and the right ones, are manifested in you under the influence of the Light.
If any state is manifested not under the influence of the Light, as in an ordinary person, there is nothing you can do. And if under the influence of the Light, then you should be in joy, even if you feel below everything, unsuccessful, etc. Nonetheless, this is a manifestation of evil, the expression of your ego that rises at the next level and which will give you new attainments.
That is why, we should receive the bad state with no less joy than the good one (in the senses); that is, they must be equal to you. When negative characteristics and feelings rise in me: evil, anger, all sorts of descents, some bad evaluations, a sense of anticipation immediately emerges in me: “Now, I begin to ascend above this. This will be the next degree.”
Due to this, I should feel this state, but not “dwell” on it. I should feel it a little, but only in order to implement it in the right direction. Then, when I feel it, there is joy in me. It is like an athlete, overcoming an obstacle, who believes that he can handle it, and this leads him forward. The left line—a sense of evil, descent, weakness—is in fact the most productive.
From a Virtual Lesson 7/29/12