Hey, being proud of your writing to almost a maddening obsession is what we all love right? XP

In terms of where you might start, perhaps a one on one would be the best way to shake off your rust. You only need work with one other person and so plotting and pace move at the speed you're comfortable with. If life steals you away for a couple of days, most folks are pretty understanding and some even prefer a more slow pace compared to a frantic posting schedule. With one on ones, you can also dictate posting size in terms of paragraphs, you do that with groups as well but one on ones often allow for more adjustment if you're having an 'off day' or something. 

Wow, you have a lot of lies. Or you did and used some up. :/ That's pretty crazy though! Clearly life isn't done with you yet. I hope writing is a bit more of a safe activity for you. :3 And watching anime or reading, etc are also more harmless hobbies. I haven't seen anime in a few years though I still go back to the classics like The Slayers, Yu Yu Hakusho and Ranma 1/2 every now and then. Oh I'm just being a wistful old lady now...haha.