There are various things that you can do to help yourself e.g. exercises , deep breathing, meditation. Remind yourself we all are in it together and you are not alone. Try to indulge in your hobby , listen to some calming music, talk to your friends. That will help you stay grounded.
Next Steps
check out this article : https://www.knolead.com/post/maintaining-calm-in-the-time-of-covid-19