What is the best way of getting rid of loneliness in the old age life?

Spending time doing some voluntary work.

Our environment has a big influence on how we think and feel. Factors like noise or cluttered spaces can hinder us from being at peace. Try and design your bedroom far from the various sources of noise pollution like traffic. Once in a while take a break from the city and take a vacation at a peaceful destination. If you don't have much time off then make a weekend trip and put off your mobile phone for a while and enjoy the tranquility