I found this book very useful and read it multiple times over a period of months. That, meditation, exercise and talking to people helped.

https://www.goodreads.com/book/show/13623836-fear

A Liberated Mind - Steven Hayes https://stevenchayes.com/a-liberated-mind/

Stopping the Noise in Your Head - Reid Wilson

"Feeling good"

See the recommendation under section two here https://80000hours.org/career-guide/how-to-be-successful/

The newly revised edition of "Lazy man's guide to enlightenment", Thaddeus Golas

Jordan Peterson "12 rules for life".