Right now the most important thing is to be there with your family.
I rarely left comment here but I just want to let you know that I had gone through similar situation like you before (well, the soulmate part only - just in case others mistaken about it, we were not married at that time!). We dragged on for 7 years and then it comes to a very bad ending ...
At the end of the relationship, I thought that my whole self had been emptied out by him. All I left was my body that just performed my daily routine. I lost interest in everything and I tried so hard not to contact him by not going on MSN (it were those days where only MSN was the most popular online messenger thing). I thought that I would never ever going to fall in love with anyone again. For 7 years that we had been together, I thought that I would not pick anyone that would not understand me so well like him.
But apparently, I was wrong. It's true that I could not find someone that can be my better half and "soulmate" as the same time, but apparently, my life is still great and with two kids, I really enjoy it.
It's hard to take the first step but I know that you can do it.