You sound like you are in a really good place after the MC session today. I read the post in the newcomers forum as well and agree with focusing on yourself, your children, and your job. At this point do the things that make you happy and continue to detach from your W.
M 33 | W 34 | Kids: S4, S3 M: 5/28/05 Bomb: 8/22/09 EA: 8/1/09 | PA 12/26/09 W L: 10/21/09 M L: 11/16/09 | 12/09 to file SA W & Boys Move Out: 3/14/10