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The 33 Marks of Maturity

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While growing up is hard to do, it is essential for both societal strength and individual fulfillment. But what does it mean to be mature, anyway? Difficult to define one-dimensionally, it is best understood as a constellation of many traits, behaviors, actions, and mindsets.In this short ebook, we illuminate the 33 characteristics that make up this constellation of maturity. Each quality is given a succinct summary that serves as both description and reflection, so that you understand what it is, and how you may better grow towards it, and into a thriving adult.

63 pages, Kindle Edition

Published October 7, 2019

65 people are currently reading
190 people want to read

About the author

Brett McKay

41 books764 followers

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5 stars
69 (50%)
4 stars
45 (32%)
3 stars
21 (15%)
2 stars
1 (<1%)
1 star
1 (<1%)
Displaying 1 - 15 of 15 reviews
54 reviews
October 20, 2019
I wish I had this book a long time ago....

....or at least I wish I had read books that would've given me this mindset.

The book is short and actually it does feel almost like a cheat because the authors quote heavily from a couple of places. But I found myself growing while reading this and not being so afraid of life, knowing that I can certainly control certain things in my life. Reading this book made me want to be become generous with everything that I am and not worry unnecessarily about things that can be taken care of easily. (It probably doesn't make sense what I said lol.)

Either way, it's a good book and I hope to read it monthly since it has 33 chapters. Thanks McKays and AoM.
Profile Image for Robert Allen.
16 reviews
May 9, 2020
A must read...

Enjoyable thought provoking points that provide needed insight and a standard to strive and maintain for success to overcome the immature current state of our world.
Profile Image for Scott Novis.
17 reviews2 followers
June 29, 2025
A Simple Quick Reminder

I picked this book and read one "trait" or "mark" a day for 33 days. It was a pleasant reminder of what to aim for. Did I agree with everything. Nope. Did I agree with most of it? Absolutely. Did I know all of it already... probably, but I did not put it together the way the authors did. Nice work. I got value from the time spent reflecting on "maturity."
Profile Image for Brendan Davis.
57 reviews10 followers
April 3, 2022
Great summary of maturity

Really enjoyed this breakdown of 33 key traits of maturity. Appreciated the summary and citation of Overstreet’s psychology book, and the contemporary examples of the behavior. Quick read, finished in a day.
Profile Image for Bill Freil.
83 reviews2 followers
November 7, 2022
good help

features some good helpful advice, maxims if
you will, to help a person develop maturity
. please give it a try.
Profile Image for Michael Lundgren.
139 reviews1 follower
April 5, 2020
I've been following Brett's blog The Art of Manliness since about 2009 and I've read many of his articles and several of his books. His books are all well researched and thought out. 33 Marks of Maturity is a short read but it gives you a lit of 33 milestones that a person should reach to be deemed as mature. Maturity is reached in levels and it's obvious, especially among young men, that maturity takes time to reach and takes effort to practice. This book gives you a lot to think about in a small package.
Profile Image for Robert M Gallagher.
71 reviews
October 23, 2019
Potentially life changing

Well researched as ever, this quick read of qualities in a mature person can convict you in your immaturity and show you where you still need to grow to lead a more fulfilling life, if you are mature enough already to see it. I enjoyed it a lot, though I found myself wanting something more by the ending. Definitely worth the $5.
Profile Image for James.
2 reviews1 follower
October 27, 2019
Great Read

A short book on the marks of maturity. Well written by Brett and Kate again, always well researched and thoughtfully written. I have been reading their books whenever available and reading articles from AOM for years now, just a fantastic resource, and the books always enlightening no matter what season of life you are in.
Profile Image for Tony Haston.
7 reviews
October 18, 2019
Inspirational

Great maxims. Some are gentle reminders; others are more direct wake-up calls. Though a very short read, I could visualize this as a good intro for discussion groups.
69 reviews5 followers
October 20, 2019
Good update to an oder text.

This is well worth a read and a re-read. It would be good to have on hand as a regular maitenance read.

I appreciate the McKays' work going back, updating texts that may be hard to digest in the modern world, and bringing them into the light.
4 reviews
October 21, 2019
Short and sweet

A great little pocketbook I would recommend to many- and possibly to those coming of age to keep in mind through their journeys.
3 reviews
October 18, 2019
AOM must reads

Another good book from the Art of Manliness! Short, simple read that enlightens all who read it to future guide them in life!
Profile Image for Jeff.
259 reviews15 followers
December 19, 2019
Good quick read; I'm likely to read The Mature Mind and The Mind Alive by H. A. Overstreet after referencing often throughout this.
2 reviews
January 11, 2020
Simple and short. Great way to evaluate yourself. I have a mind to use to evaluate subordinates or potential employees in the future, competency can be trained, maturity not as much!
Displaying 1 - 15 of 15 reviews

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