HI Blue, I am so glad you are here!
I too am divorced with teens, so a fellow single mom. I isolated for quite a while when I divorced and could easily again. I literally force myself to do things, put them on my calendar and will not let myself change it unless something major would come up.
I like to work in my yard as well most of the time. I too am a procrastinator. What I do is find one or two things (out of many) and make myself do them. Even if I don't want to. I find myself so glad I did once it's done. Today I am making two phone calls I don't want to make regarding some financial issues, I have done one so far.
I hope you keep posting. You are not alone! I am glad you are seeking face to face support as well. Keep at it!