I'm in the midst of reading Hardwiring Happiness.
I am really enjoying it which is why I am sharing this before I'm even half done.
The book digs into Negativity Bias (which I've written about before here) and the reasons why it exists. AND, it provides you with ways to combat it and develop help develop Positivity Bias.
The exercises/practices it provides are related to mindfulness practices but are even simpler to get started with. The tools this book provides are designed to specifically attack Negativity Bias by changing your brain to be more receptive to positive experiences and hold onto them longer.
So, while these simple practices are behavioral (they are things that you decide to do and you develop the habits of doing them), the goal is much more than that, the goal is changing your brain.
This is pretty exciting and you can get started with them quite easily.
As a leader this is a crucial tool to develop if it doesn't come naturally to you. And Negativity Bias tells us that it won't come easy to most of us.
Check out this amazing book.