Anxiety
http://www.kidsmentalhealth.org/children-with-anxiety/
https://happilyeverelephants.com/home/books-for-kids-with-anxiety
https://childmind.org/topics/concerns/anxiety/
https://childmind.org/article/behavioral-treatment-kids-anxiety/
https://adaa.org/living-with-anxiety/children/tips-parents-and-caregivers
https://psychcentral.com/blog/is-your-toddler-struggling-with-anxiety-what-you-need-to-know/
https://www.cdc.gov/childrensmentalhealth/depression.html
https://www.medicalnewstoday.com/articles/323454
https://www.nimh.nih.gov/health/topics/anxiety-disorders/index.shtml#part_145338
https://copingskillsforkids.com/deep-breathing-exercises-for-kids
https://youtu.be/JP6qNv9Gxq8 story about How to Tame Your Angry Monster
https://youtu.be/L-iOpZlTsWM story The Very Hungry Worry Monster
Nostril breathing :Lift your right hand up toward your nose. Exhale completely and then use your right thumb to close your right nostril. Inhale through your left nostril and then close the left nostril with your fingers. Open the right nostril and exhale through this side. Inhale through the right nostril and then close this nostril.
here is a link to show how to do it: https://www.youtube.com/watch?v=ub7JEN1V7JE
Emotional Freedom Techniques-Tapping (there are lots of Youtube videos on this)
Watch "How to Use Tapping to Calm Anxiety Tutorial | HealthyPlace" on YouTube