It's tim for me!

I'm a single momma who has always put her kids first, but now 2 of them have left the nest, leaving just my 12yo, extremely independent boy, at home with me. I now have all of this extra free time & am trying to figure out what to do with it. I'm 44, 5'8, and currently weigh 183lbs. I have started eating better & joined a gym bcause I am tired of my knees aching all of the time, and not having any energy. I am also hoping it'll help me with my depression. I'd like to make some friends who will encourage and support each other, and who can understand when you have a bad day or two.