Take care of yourself. If you feel it is getting too much for you to handle sometimes, by all means go and do something nice and relaxing for yourself. This is a very important time to take care of yourself. Go to movies, hear concerts, visit with friends, go out to dinner. Take walks, learn to meditate.
Meditation is one of the best stress relievers known.
Make sure you nurture your soul during this period. You will be able to think with a clearer head and you will be able to respond to, rather than react to, what comes your way. This will also show your kids a great way to take care of themselves when they are experiencing stress. I see them hitting, slapping, shoving, grabbing, calling them names and treating them badly. This upsets me so much and I can't think straight the rest of the day.