I have done an experiment by staying away from my notorious mobile and laptop for 3 days. I felt there is vacuum when I was lonely, It was hard to resist. My mind suffered a lot and wanted to concentrate on the worldly things. It is common that many of us are having that fear of being pushed loneliness. Many of us are not ready go into that vacuum. It gave me a way to practically understand and differentiate the terms loneliness and peace. It was a great thought process.
When we start feeling that vacuum, We feel isolated, void and unloved. But that is the space which can trigger the soul to find many unknown things. When we find something to distract our void. We indirectly give some unwholesome completeness, It is giving something which is not required at the place. May be like taking a additional cup of food when not feeling hunger, lying in bed when we do not require sleep, surfing in internet without any intention.
It would be better for us if we can go through the void and fulfill what is required. We need to confront the station than escaping with distraction. We can find so many inner needs and thoughts only when we go through the loneliness. It will teach us many things we can not be bought in our busy life.
There are many ways to keep the concentration in silence yoga, meditation, etc... Busy world will come to experience the silence only when they understand it. Days are not so far. This is my practical experiment, So try it and enjoy the life. Sweet silence