You asked what causes me pain-the evil I experience is no accidental or incidental fact in my life, but inescapable, essential. It was my central illusion, to suppose that I was destined to be happy. Evil is primary, good secondary.The good is the objective of desire; but desire itself is painful; hence the underlying motive in desire is to get rid of desire itself. The good is therefore negative, not positive, it is the easing of a burden. Desire starts with an original frustration. The fact that every desire, in so far as its appeasement is postponed or incomplete -- and of how few of our desires is this not true? -- is partly frustrated, and so contains an element of evil. There is a soul of evil in things good. And then ofcourse there is Will vs Will,all around.