“A Guide to the Good Life: The Ancient Art of Stoic Joy” by William Irvine has taught me appreciate what I have and take it easy on myself when things don’t go as planned.
Also, I am working on a page on A Philosophy of Loneliness (https://www.popmatters.com/a-philosophy-of-loneliness-by-lar...) and finally I would suggest "Trust the Process" (https://www.shambhala.com/trust-the-process-1598.html)
All these somehow helped me in dealing with personal issues and/or provide some adjustment to my views.
Finally, maybe this one might help, too https://www.goodreads.com/book/show/89200.Pragmatics_of_Huma... (I read it in Italian and many years ago, the current edition is probably updated).