Polysecure: Attachment, Trauma and Consensual Nonmonogamy

A great book even if you don't personally feel like “poly” is a description that fits you very closely - I read it on a recommendation, because I never subscribed to the societal notion of relationships acting primarily as handcuffs, rather than an expression of everyone in it being there because they truly want to be.

The first part of the book reads like an academic paper - which I like, but in case you don't, do not despair - the second part has a lot of practical advice on how to develop your attachment patterns with one (or any number of) partners as well as yourself. If you are willing to introspect and work on yourself and your partner(s), you'll find enough advice to think through for a long time.

And at a minimum, you'll end up understanding yourself better. Something we can likely all benefit from.