How can emotions be helpful?
1) Motivating one's action: emotions make you do stuff.
2) Communication to others: they convey important information to others without having to actually tell them directly.
3) Communication to yourself: they tell us important information about ourselves; what is important and meaningful.
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Answer these questions and I think you’ll have a nice understanding of how one might look at emotions in a different light.
We know how to predict when it’ll rain. We understand the science behind it, but we can’t make it rain or make it stop once it’s started. Sometimes all we can do is prepare ourselves.
Similarly, we understand what creates an emotion. We can pretty well predict what might make someone emotional but we have little control over emotions.
We do have control over how we respond to them.