and thanks for your feedback on my thread. I'll try to return the favor here, fwiw.
One thing I found helps is exercise. It doesn't directly address the just me part, but it does improve mood, makes you look better and fills empty time. Having an exercise goal is good too.
Meetup.com is a good place to find people.
It might be good to go to the same restaurant/diner every now and then. I do this (I work alone from home for the most part) and it makes you feel part of the community.
The reaching out idea is good - I wonder though if more than just seniors would be interested in something like this. Maybe you could join a dinner club, and alternate cooking at a different bunch of people's places. Cooking is a good activity - why not invite someone to help you? Oh - Cook's Illustrated is a good cooking magazine.
How about alternately choosing a movie to see with your neighbor? She chooses one, you choose one, she...
Good luck -
Luke
M58, xW54 S22, D18 M 1984, D 2016 Living a new life.