Do you find that, “Talking about it” helps?

When you are upset, or in the past perhaps had a traumatic experience, or even just stressed out, do you find talking about it helps?

If so in which way? Is it the act of talking that you find some peace, some sort of catharthesis, or do you find the persons feedback more help? Would it matter who you spoke to? Or have you found anyone will do, from a good friend, to a clergyman to a psychologist.

If it were a psychologist why did that help you more? Or if it were a friend in which way did it help you. Was it the empathy they showed? Or the practical advice they gave. I often feel talking about things makes me feel worse, like I am in a circle that never ends. Maybe I am talking about in the wrong way? Or to the wrong people.