J.P.
First I would like to say...what you see is not always what is going on...I look at other people and think I'd like to have that sort of life and then you find out what things are like it their life and you think other wise...
Anyway...When I worked I did get up early and workout at home (www.firmdirect.com) These ladies at the FIRM have been my savior and it is much cheaper than a gym membership.
Try going to www.flylady.com too. She might give you a guidline that would work for you...you just have to remember that you have to let some of the house work slide a little in order to have family time...incorporate a family cleaning day where everyone has one thing they are in charge of...dusting, collecting laundry, unloading the dishwasher...
Good luck,
Jen