I think we all, as creative individuals, go through - not slumps - quiet time. You need time to recharge and there's no point forcing it if you aren't in the mood - leads to mistakes, frustration, and blah. Take your break and you'll know when you're ready to get sewing again. And as for mothers and their guilt...I'm trying REALLY hard to shake that, even at 40-cough-7! We don't need that!