Being near the water is extremely calming. You can forget about everything and simply get lost in the beauty of nature. Listening to the water and feeling the cool breeze allows you to appreciate everything you have and enjoy the moment.
If you live near a beach, that is a great place to go to just to listen to the waves and watch the water. If you don't live near the beach, don't worry, there are many other options to get the same relaxing feeling. Find a local lake or river for you to take a walk around; it doesn't have to be huge to be relaxing. Feed the ducks and just watch the wonders of the world around you. Before you know it, you'll forget what you were stressed about.