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.
When you slow yourself down and emanate peaceful, tranquil thoughts, you actually send the anxiety and stress out of your life. Similarly, when you meditate you bring God's silent love into your present moments. In silence and stillness God's energy will become yours. By slowing your mind and other thoughts, you allow the fastest vibrations of spirit to enter. That faster vibration is one of harmony, love, and peace.