I also struggle with being able to minimize external distractions. In some cases, they're non avoidable and if the speaker gets distracted, you naturally do too. I think it's more important that you have paid enough attention to know where to start up again. Also, having "distractions," or having a busy atmosphere, could actually help boost the energy to stay focused. As for internal distractions, which include thinking ahead at what you want to say, actually is even harder to control. Again, when you're not in the right conditions, or you're unfit to follow through on these listening expectations, then you should make it clear to the speaker to avoid misunderstandings.
This is especially important when working with students. It is already difficult to read their intentions when their body language says otherwise. I need to continue to build on these qualities I struggle with and establish them as part of a habit I take with me to work and everywhere else I go. Students want to be understood. They need someone to not only hear them, but someone to really listen to them; which leads me back to working on my patience and taking the time to let them talk instead. Being empathetic and being concerned speaks out that you care. The best way to teach my students to listen, is to take the initiative and listen to them first; "seek first to understand, then to be understood." Lead by example in all interactions.
Resource:
"Effective Listening Skills." (2011, December 9). Fig ESSA. Retrieved from https://www.youtube.com/watch?v=C8zNx_IarUw