I have a good work ethic, and stay very productive (better than when I'm in a client's offices.) And IM is a life-saver with the teams I'm on.
The biggest challenge to transitioning to WFH was not the kids. They respect my office as a workspace and really go out of their way not to interrupt me.
No, the biggest challenge was my wife. It took over a year -- a YEAR -- for her to recognize that I was working. For the longest time, I was "playing on my computer" or "surfing the Internet" or whatever the daily description might entail.
One day, she emotionally finally reached a conclusion: "I simply cannot count on you as being available to take care of things here at home while you're working." Bingo!
And that was the crux of it -- working at home didn't mean working while living life at home, it meant physically working from home. I explained how I was mentally at work, and not at home. As soon as she accepted the fact that I was earning a living while still being in our home, everything fell into place.