Work is more than work. Work is a way of creating and contributing; It is giving to the world; it is sacramental, because It is serving. It is a yielding up and a showing, WHATEVER it is you did — The best-made bed, the best-written book, the best piece of pottery you had within you. It is good for the psyche and good for the soul.
Peace always begins within each of us. Our ability to create in the world depends on our ability, first, to work to create peace in our own lives. It's much easier to advocate peace on Earth than it is to be able to bring peace your own home. Or your own heart.