Common Merganser in the rain
Ouspensky implies there is no negative emotional center:
—ibid, page 56
—ibid, page 258
…I wish to confess to you in all sincerity that although my essence, with the consent of the parts of my presence subject to it alone, had decided to participate in the scientific experiment about to take place within Gornahoor Harharkh's new invention, and although I had entered its chief demonstrating part without the least compulsion from outside, yet this same essence of mine had allowed to creep into my being and to develop there, side by side with the strange sensations I have described to you, a criminally egoistic anxiety for the safety of my personal existence.
However, my boy, so that you may not be too distressed by this confession, it is not superfluous to add that this was the first time this ever happened to me, and also the last, throughout my entire being-existence.
—Beelzebub's Tales to His Grandson, G. I. Gurdjieff, p. 156-57
When we say that negative emotions are an impulse, it means quite literally that they drive us towards something. It is a matter of the horse; so it is, indeed, a matter of feeling, or emotion, which is always what imparts an impulse.
I think the negativity and negative emotion doesn't come from whether I like the experience of the emotion or not, but what the intention behind it is. The aphorism like what it does not like already implies that I don't understand what I like and don't like, or what is good for me, in the first place.
So if I don't study my intentions, I am unaware of my actual intention, I can't know whether I am negative or not.
And if my intentions intend harm—if they are selfish—
well, that's negative.
That includes, of course, negative or destructive intentions towards myself.