I feel your frustration. I really do. I smack my keyboard so hard that I lose feeling in my hand for a while but I keep on typing until I either get so angry that I just get up and take a break or watch Youtube for a while. You'll get there my friend.
Naw..... Light is energy, darkness is the void of nothingness. They are not opposites. If anything, darkness can be the opposite of ANYTHING, but light..... light would be the opposite of radiation I believe, that would be the ying yang of light.