Don't really have any advice for you. Your doing a great job and hanging in there well.
Just a few questions though to consider:
1. Have you concretely identified and been doing enough to meet your wife's emotional needs lately??
2. Have you been undertaking anything concrete to detach and taking enough time for your own activities??
3. Is the balance of time spent with the kids and on private activities relatively equal for both of you?? You don't want to end up in a situation where you are always looking after the kids while she gets to go out and have fun.
