I can take time and make space for myself when needed.

The ten minutes in the car on the driveway, engine off, radio on, before anyone inside knows you are home. Plenty of people do this and feel faintly guilty about it.

They shouldn't. It is the difference between walking in as someone with something left to give and walking in at the end of your reserves.

Space is not withdrawal from the people you love. It is maintenance on the person they are getting. Take the ten minutes, and skip the apology afterwards.