I started going to a Saturday night Alanon meeting. If I'm feeling sociable I'll sometimes stay for fellowship after. There's an AA meeting at the same time, and they are super generous about sharing their food and cake.
I also look for at least one thing to go and do during the week. Like a date, but just me. So far I've been to a music festival, the roller derby and a couple of events for veterans. Tomorrow I'm going to an art festival. If there's nothing going on I hit the thrift stores and treat myself to some "new" clothes or just go for a nice long walk.
Learning how to be comfortable on my own has taken some practice. In the past I have tended to jump immediately from one relationship to another, with disastrous results. I am having a great time working my recovery and enjoying my newfound freedom.
It does get easier if you can let go of the "shoulds" and look for some things you can enjoy on your own. Hugs.