Not to derail the conversation, but I disagree on a couple points.

While I think in some specific situations it can be hard to predict how you feel in advance, especially with in terms of intensity, often, this is not the case. (I'm pretty sure if you intentionally stomp on my foot, I'll be upset with you.)

I think the mental breakdown that people have between beliefs that are rational and ones that are emotional is false and damaging. In truth you're emotions should correctly flow from you're rational understanding of the world. (It is correct and proper to be upset with you for intentionally stepping on my foot.)

I do think that people have the same the same duty to make sure their emotions flow from reality as that they're beliefs are actually grounded in it. (If it turns out it wasn't you who stepped on my foot, it would be unfair of me to stay upset with you.)

While I understand that sometimes people feel emotions that are difficult to place and sometimes its hard to trace an emotion back to it's source, if you understand that an emotion you are feeling is out of sync with your understanding of the true course of events or of your belief system, you should try to realign it, and rops to u/bystandling for doing so.