These are my tried and true tips for helping to relieve some stress. I get massive headaches and physical illnesses from stress, so it's very important to me to find ways to cope with even the trivial daily stresses that life blesses us with :)
1. Nature is healing. Even to just sit in the grass and play with whatever is there, blades of glass, pinecones, rocks, just feeling them on your fingertips, feeling the sun's love shining down, and feeling the gentle breezes washing everything away, brings you to a calmer state of mind.
2. Remember a time when you were not stressed. One of my favorite truths about the universe is that everything is temporary. Everything comes and goes, rises, then comes to pass. What is stressful now won't seem so stressful later. Think back to a time where you felt less stressed. Remember that you will feel like that again. Just like a toothache, the pain eventually goes away. Learning to appreciate the "not stressful" times will make it easier to cope when stress creeps up.