Experiencing covid includes many moments that are uncomfortable, fearful, maybe a bit painful. What an appropriate time to produce some joy! Two people come to mind as instructors and cheerleaders for producing joy: Chade Meng-Tan and Lisa Feldman Barrett. Barrett is a professor of psychology at Cornell University in upstate New York. Meng-Tan used to be a Google software engineer but I don't know what he is doing now.
Both can be found with Google search and both have ebooks that can be instantly downloaded to a phone, tablet or computer. Both have talks and presentations on YouTube. Both people emphasize that we can learn to control our emotions and feel the way we want to feel.
Here is a link to a page of the highlights I marked in Chade's book, "Joy on Demand": https://read.amazon.com/notebook?ref_=kcr_notebook_lib&language=en-US
If you are like me, you have some doubts that a person can select the mood they wish to be in. That is a normal, modern reaction but as Chade says, anyone with a mind can do it. Besides, it isn't that hard.