Visiting people. Some people visit businesses and they are the people they have connections with. Some people visit family and that is their connection. What happens when the family dies and all that is left are people you meet?
Joining garden groups, bowling groups, red hat groups, Masons, churches, Lions, Jaycees, and all the other groups out there is one way of "breaking out of isolation." Inviting people over is a feat of nerves. I have never had a group of people at my house who did not judge and compare and believe their stuff was better. Sigh.