Tapping- This technique involves tapping with your fingertips on 9 specific meridian points on the body while focusing on the source of your anxiety. It is also known as EFT (Emotional Freedom Technique) and it's an ancient Chinese holistic practice that is being used by cognitive behavioral therapists around the world. Tapping calms the nervous system and helps restore balance to the brain. Visit this site for Tapping 101 and a video that explains the 9 meridian points.
Grounding with 5-4-3-2-1- Take a deep breath and then use your five senses to find 5 things you see, 4 things you can touch, 3 things you can hear, 2 things you smell and one thing you can taste in your mouth. This strategy gets you back to the present moment and is especially good with treating past trauma. Find out more here.
Guided Meditation- There are many specific meditations tailored to coping with anxiety on apps like Headspace and Insight Timer.
Give Yourself a Squeeze or Use a Weighted Blanket- A good hug, even if you're giving it to yourself, can lower the stress hormone, cortisol, and give you a burst of oxytocin and dopamine to promote a sense of well-being. A weighted blanket can have a similar effect. I've been considering getting one of these senso blankets or something similar on Amazon, to keep in our bed for those nights that our kids have nightmares.
Muscle Tense and Release or Progressive Muscle Relaxation- Start with your toes and then move on to each small muscle group in your body. Tense the muscles for three seconds and then release. Focus on how your muscles feel on the release. This has been known to help with physical symptoms that are caused by stress and anxiety like headaches and stomachaches. There are also guided meditations to help you through this process. To learn more visit this site.
Take a Hot Bath or a Shower- All of the fancy well-researched strategies above just weren't practiced when I was a kid, so this simple technique was pretty much the only one in my toolbox. I thought of the bathtub as a magical place where all of my worries could just melt away. Even as adult you can tell when I'm really stressed because I may take more than one bath in a day. After all this time, the strategy still holds up.
Try a Distracting Activity- Something repetitive that you can do with your hands is usually a good idea. Find something that you enjoy doing that is fairly repetitive; knitting, drawing, playing with play dough, jewelry making, puzzling, playing board or computer games. You can also try an activity that you can easily escape into like a good book or movie.