Family time can be spent bike riding, taking walks, skating or any number of activities. You could also combine business meetings with a brisk walk to and from the restaurant. Walk during break time. Make exercise a daily habit. The truth of the matter is, if you don't feel up to exercise, you probably need it the most.
Exercise speeds up metabolism and heart rate and increases energy.
It's easier to find time to exercise when you feel you have the energy to complete your daily tasks. Much like the vicious cycle of no energy and lack of accomplishment, exercise creates energy which enables you to accomplish more. Try taking it one day at a time. The more you do, the more energy you will have. Eventually the exercise habit will replace the couch potato habit.