I wrote an article recently on multi-tasking. See, women pride themselves on being able to do it, but really, it just means we're doing a lot of things - not terribly well. So now, I try to do one thing at a time - where it matters. If I'm unloading the dishwasher I can always have a kettle boiling. Then I might wipe down the benches while the tea's drawing - that's a sensible use of time. But reading while you're watching TV, or sorting washing while helping your child with their homework doesn't cut it - it just dilutes the effectiveness of what should be the priority.
There might not be enough time to get everything done in a day - but what about a week? Or a month? How many things on your to-do list are vitally, life-threateningly urgent? 30 - or 3? Refining that to-do list, prioritising and delegating jobs to others can make us so much more productive, happier and satisfied - and chances are, we'll get more done in the end.