Focus is a skill and needs practice too. While it is not possible for to focus throughout our work duration, we can all start small, build on the progress and gain the skill of deep focus.
Do the heavy lifting before you start:
This is something our mothers have always known. The vegetables are cut, the mix has already been marinated, the dough has been rested, masala is ground and handy. Everything is laid out in front of them , ready to use. They exactly know the cooking time required and do supplementary activities.