What are the barriers of effective listening?

I think one big thing is noise. It is hard to hear in a loud place. Like a cafe with music.

Also, sometimes my mind is busy. I think about my own problems. Or what I want to say next. This stops me from really hearing the other person.

Being tired is a big problem too. When I am tired, my brain is slow. I cannot focus on the words. And if you already have a strong opinion, you might not listen to a different idea. You just wait for your turn to speak.