Jonathan Swift's line "May you live all the days of your life" means don't waste time. The speaker argues that despite obligations to family and work, you should spend each day doing what actually matters to you, so you don't reach the end wishing you'd lived differently.
Jonathan Swift said, may you live all the days of your life. By that, of course, he meant don't waste any time. Make sure you live the life you want to live every single day. And that might seem like a utopia because we all have obligations to ourselves, to our families, to the work that we do, to other people. But it is a good reminder to make sure that every single day you try and live the life that you want to live so that you don't end up at the end not having lived every single day.
