Enjoyable because I grew up a Steelers fan and in the hey-day of the 1970s dynasty. I did read this in my teens. This copy has the original manuscript, as well as an epilogue and addendum dated all the way to 2018.
The "initial" book is enjoyable, but a tad thin. Much is glossed over and told nearly exclusively from the first person and on supported by much ancillary information. An easy read that is nonetheless enjoyable because of the "overcoming obstacles" theme. One area I enjoyed was that Rocky wrote some unflattering things about himself, that made the prose more real and about a regular human, not a hero.
The additional sections of the book were added about Bleier's life after playing days were over. About his divorce, remarry and a delightful note of adopting two girls from Ukraine. Actually, this "new" part of the book was where I got much from due to the ups and downs after his playing career. He just kept chugging along and contributing and then good things have happened. Nice mantra - I believe in that theme: putting your head down, just doing your work well, and eventually things work in your favor. No complaining, just one day at a time.
The final section is much about Rocky's one man show about his life, anecdotes, stories, and wisdom from a life well lived. I did feel this smacked a bit of a commercial, and not as enjoyable.
Overall, if you are a Steelers fan and never read it, give it a chance.