Many people (including me) tend to confuse "jealousy" and "envy" (fearing that others will take what you have, contrasted with wanting what someone else has) and "guilt" with "shame" (feeling bad over something you've done, contrasted with feeling bad over what you are). Just now, reading your article, it occurs to me that maybe some people experience these as a set of similar sensations and that's why they're so easy to confuse. Rational analysis of the situation is needed to determine which label is most appropriate. For example, if I feel sensations that I might tend to label anger/fear/frustration, it might take me a while to put them in the jealousy/envy category, and longer still to pick just one of those two labels. Similarly, if I feel sensations that I tend to associate with despair, I may call them guilt/shame, but it might take a lot longer to peel apart those two options. And there may not be a "right" answer, since it's a rational analysis that I'm trying to apply to something that's happening partly unconsciously and in my body.