I've read "The Happiness Advantage" on (then-)emerging field of positive psychology, which I strongly recommend to anybody interested in improving their mental

I've read "The Happiness Advantage" on (then-)emerging field of positive psychology, which I strongly recommend to anybody interested in improving their mental wellness. It's not too big, well structured, and contains both research as well as practical advice/techniques. I also noticed how aligned it is with cognitive-behavioural therapy.