when we are by ourselves, our mind tends to find the solutions to our problems that otherwise do not nag as much as we are distracted.
Being with myself, I see all the anxiety building up to solve every problem in my life and when I cannot, I start feeling disturbed.
Also speaking is your vent for your innerself. if you do not speak (like if you do not use restroom), the toxic stuff starts building up and starts nagging you.
Yes if you pto-actively focus on your needs and your actions, this disturbance is minimized