The Blessing of Humility (2016, Navpress) does not disappoint.
At a short 95 pages, The Blessing of Humility uses the beatitudes as a launch-pad for exploring humility. Quite honestly, I would never have made the connections between the beatitudes and humility that Bridges did, but I believe he is correct. He describes them as "humility in action."
There are several good books on humility (and, of course, CS Lewis' chapter in Mere Christianity) and this is a welcome addition. If you are interested, may I humbly recommend this excellent little book.