Bunny, you give some really good advice....now, if I could just figure out how to practice that....
I have a difficult time, still, deciding what will most likely be used against me and what I can relax about. Since I am still embroiled in a legal battle with the exNidiot, it's a challenge not to be paranoid, but know also, that most, if not every, move I make can and will be twisted in a way to make me look "bad" and him look "good". He has an attorney who is much like him....a real "shark". I am damned if I do and damned if I don't. So it has been helpful to me to simply move forward, with my own good intention, take advice of my attorney (there's the "be careful" and not let on to everything part), and let the rest go.
So, I think I would add to your advice a caution to not get stuck worrying about what the ex is up to, or you could spend all your time in a dark place (that's most likely where the ex is) and lose sight of your goal (life without the ex's energy).