For personal finance -- Dave Ramsey's Total Money Makeover is simple and effective. I haven't read Ramsey's EntreLeadership (a book on running a small business), but I will in the near future.
Henry Cloud's "Boundaries" is a solid personal relationship book -- on setting and maintaining effective boundaries in relationships.
For general personal growth and career -- "Seven Habits of Highly Effective People" (Steven Covey), "Integrity" (Henry Cloud), and "Quitter: Closing the gap between your dream job and your day job" (Jon Acuff). I've read parts of those, but not all of them. They're good, and recommended by several sources I trust.
Money: something by Motley Fool on investing.
One of the best books for advice in the work world that translates to life is "How to win friends and influence people" by Dale Carnegie. It is a great book that has advice that covers a multitude of things.
I'm not sure it qualifies as a must read (certainly not for "every man" as the OP asks), if it only does so for a specific religious group.
Here's a second endorsement for How to Win Friends and Influence People. Great for work and personal friendships.
Rich Dad Poor Dad by Robert Kiyosaki. He is kind of a 'get rich" guru and I find alot of his books are fluff that only benefit him, but this, his first book, has some good, common sense ideas about money that really changed my way of thinking and put me on the right track.
Albert Ellis and Robert Harper, "A New Guide to Rational Living"
Robert Persig, "Zen and the Art of Motorcycle Maintenance"
Some might think I am losing it, but Hitchikers Guide to the Galaxy.
Sometimes we just need to learn to realize the absurd in the every day and learn to do the absurd right back....or Don't Panic