It really sounds like you are going to be ok. Attitude is everything. And I've been at this a lot longer than you. You will be surprised how much better you will feel when the D is behind you. You still have small kids and this really sucks for them, but in the long run - I'll bet they'll be fine. It is often easier to parent alone (believe it or not), especially if the other parent wasn't "onside" with you all the time. I did most of the parenting anyway.
Becoming bitter is one of the worst thing> I struggled with it. I will never forget what happened. But I am getting past it. You will too.