You can do the same thing with your emotions. You can follow where anger may lead you, for example it could be hurt, sadness or fear. This is akin to different aspects coming up. Very often if someone taps on their anger and it's 8 out of 10 and it decreases to 0 but then sadness comes up and it's a 10, they might feel EFT didn't work. What has happened is they have come across another aspect of the same issue, in this case; sadness. Chasing emotions like this is like peeling an onion, and of course it might make you cry too!, but it's worthwhile in the end.