Hi Meggo, as long as it brings you pleasure, let the kids roll their eyes, and do the dishes and clean the kitchen while you practice. Imagine the example you set when you are doing something, just for yourself and it is such a challenging but rewarding thing. I know when I was raising my kids, I gave them all my time, energy and money. I rarely did things for myself. I felt guilty. That was wrong, though. I deserved my own time, my own new stuff, my own interests beyond being super mom, and so do you. The kids will respect you for it eventually. They’ll remember how you persisted and succeeded long after you’re gone and they are grown up with their own families. So, what you are teaching them goes far beyond the study of music. I commend you for it!