It's not easy. Telling the children was the hardest thing I've ever done and by far the worst day of my life. My ex ended things and I hadn't really given up yet at that point, but it was for the best.
I had a year of counselling. My ex left because he had realised he's gay, which caused a lot of trauma for me, but I strongly recommend counselling whatever the reason for the breakup because it helps you to focus on yourself and think about what you want.
Divorce not final yet, but been separated for more than two years now and I'm much happier. You don't realise how much damage the wrong relationship is doing to you until you get out of it.
I had to do all the work on the divorce, even though he left me, and it has been quite a strain. So be prepared for that.
The rwo years thing mentioned by a PP is pretty accurate.
We gave kids 50/50 and I miss them awfully when they're with their dad. On the other hand, I was doing 90% of everything before so I have been freed to go back to work full-time, which has also been necessary financially post-separation. I'm lucky enough to have found a good job that I like.
I met someone almost immediately after ex and I separated. It was far too soon for me to enter a relationship, but we became close friends and that has now evolved into a relationship. I'm meeting his kids next month and hope he will meet mine in due course.
I had always thought that if we ever split, we would be civilised, amicable etc. But that wasn't the case. My ex behaved appallingly and still does on occasion. It was gruelling at times. I'd say be prepared for the worst, because you honestly don't know how someone is going to behave through it all until it happens.
My life is much better now. Two years ago I was a complete wreck and thought my life was over, but once you get through the early pain, things improve a lot.