In my case it was a combination of things.

Take time of yourself and go away.

Pay for a baby sitter.

Enrol in an organised care program.

Mum and Dad would often like to visit us in the country or would like the kids to visit them in the city.

Make arrangements with friends. That is I would take one two week break off from work and catch up on things at home while also looking after another friends children. They then return the favour.

I have always worked full time once the kids started school. This combination of solutions worked well for me. I guess it boils down to what you are use to. I find the 2 week breaks throughout the year manageable whereas when I read about the long summer some of you have I would be panicked! LOL.