I've read some of Dr. Seligman's books, and his theories make a lot of sense to me. Using his own terminology, I could say that I have a lower than desirable PERMA score, and what keeps me from deliberately raising it is (partly) my learned helplessness regarding specific aspects of it.

If anyone is interested in reading some of Dr. Martin Seligman's books, I googled a list:

Learned Optimism: How to Change Your Mind and Your Life

Flourish: A Visionary New Understanding of Happiness and Well-being

Authentic Happiness: Using the New Positive Psychology to Realize Your Potential for Lasting Fulfillment

The Optimistic Child: A Proven Program to Safeguard Children Against Depression And Build Lifelong Resilience

What You Can Change and What You Can't: The Complete Guide to Successful Self-Improvement