Volunteer for something. What seperates the volunteer from you right now is that they are doing something positive for their community, they work with others and build relationships with people in common cause.
So check which non profits you have in your community. Friends of the Library if your a reader. Friends of the museum if your interested in art. Anything related to Cancer might be interesting unless you need to distance your self from that. A lot of causes have thrift or up scale consignment stores if tretail would interest you. Master gardener. Animal shelters. The free Clinic. Historic Preservation. If your interested in going back to school check with community schools, colleges etc. and see if they use volunteers/interns. There are a ton of non profits in need of volunteers. You will not make any money but you will earn respect.
The reason I am picking that route is that you can control your time and just ease into it and you can pick your spot. One project or meeting a week, one small job accomplished can be a tonic. The working pressure is reversed with volunteers, because your free labor it's the organization that has to demonstrate that your wanted and they have to keep you comfortable on some aceptable level.
What do you get out of it? Purpose. Meet people that you have somthing in common with......... they are there to help which is why you are there. Seeing the same people on a regular basis allows friendships to build. Disacover what your good at.
You'll build job skills and your resume and quit often volunteer work turns into a paying job. If you can do a great job for free imagine what an employer will think of you if and when you decide to get a paying job.