Hey Andrea,
One of the most effective ways I’ve found is to exercise daily. Not just a little walk, you’ll want at least 1-2 hours of “real” exercise. Running, biking and yoga are all great options. I found that doing this daily kept me less stressed out, helped my anxiety and made me feel more energized and better all day. I recommend doing this outside as well, not inside. You’ll want the fresh air and sun as it helps even more.
You also want to eat very healthy. I always say a whole foods diet, no junk. This helps in so many ways, more then people think.
Good luck ; )