You can make your children a priority in your life, but also recognize the need to prioritize yourself.
I think this is very gender driven- women in particular are pressured to be very self-sacrificing, to give up careers to work p/t in jobs way below their intellectual level, to be on hand day and night (I have friends whose husbands have never ever had the kids for the weekend or even a day as 'they don't know what to do'), and to generally sacrifice their lives to make their children's better.
I don't like this for two reasons. First, it seems crazy to sacrifice everything to help your children get ahead in terms of education, employment and general life enhancement, only to model women just sacrificing their happiness and their life goals especially if you have girls, I don't want them to think they have to just grow up, have all these amazing dreams and then let them go again, especially when men don't.
Also, I'm a person in my own right and am only going to get one life on this planet- I'm prepared to adapt, change, do things differently for my children and pour a whole lot of love and energy into parenting, but I don't want to become a different person or not achieve anything in my own right because I was a parent. I am more selfish than some other mums I know, but I think it's important for my children to know I matter to, so does my husband- and we have to do what's best for the whole family which sometimes means doing things they don't like (moving home, not allowing certain things).
I don't think there's anything wrong with doing a p/t job or giving up work if you get the chance, I'm sure many men and women would love to do that and have more family time- but I don't like it when women are essentially just expected to sacrifice all their dreams and goals at the altar of motherhood, especially as children grow up and away and you may have 30-40 more years of living to do. The career thread was pretty sad as it sounded like a lot of people felt they had 'no choice' which isn't at all the same as choosing to downsize your work at all.