Emilie Griffin
Thomas à Kempis
Patricia Hampl
Henri Nouwen
Take advantage of moments in your day, when you are alone, to shut out the noise (radio, podcasts, music). This could be when driving in your car.
Plan a time away from people regularly in order to spend time in solitude and silence. This can be as short as half a day even once a month. Work this into your schedule (otherwise it may not happen).
Have a place away from distraction (this could be an office, cabin, or as simple as getting outdoors for a walk by yourself).
When in a group of people, practice speaking only when needed; intentionally just listen to the conversation happening around you.
Solitude: A Practical Guide by Adele Calhoun
Are the Disciplines of Silence and Solitude Really Biblical? by Robert L. Plummer
Take a Break from the Chaos by David Mathis