I know it's difficult not being surrounded by what is familiar and comforting to you (your kids). When my M was over, initially it felt strange not being around my XH, who is usually in my face (and in a really bad way). Over time, I got used to it and my new found freedom...I found great ways to spend my time with my family and friends...I hope you can find something like that for yourself, too.
Sadly, the world doesn't stop when you're alone...and waits for no one.
