Ladytiger, tough! Your parents certainly made it tough for you. Very tough.

You described how people do not give you time to get your word in. You also described having a very hard time focusing when listening to others.

those two things MIGHT be related. When one conversation partner is actively listening to the other, being concentrated on the other, then the eye contact, the rhythmical nodding or whatever else is used to signal the understanding of what is being said, then those nods and that eye contact help create natural pauses in which to get a word in. But if the listening partner is listening monotonously (you can listen monotonously just as you can speak monotonously), the talking partner just keeps talking because she is not getting the signal to stop.

If that is what is going on with you, then it is not the case that you listen too much, but is the case that you do not listen attentively and actively enough.

But that is a matter of practice and skill building - you will get there.