It's important that we understand how our emotions work. Sometimes emotions give us valuable information, and sometimes our emotions don't behave the way we want them to. A prerequisite for individually understanding anything about our emotions is the ability to notice and identify emotions. I sometimes find this difficult.
One piece of advice I get is to notice where different emotions are felt in my body. A graphic designer asked 250 people to draw where they feel different emotions, and superimposed the drawings. The results are evocative.