The Edge of Texas — Jack McKinney

This book portrays the high peaks and low valleys of a self-made multimillionaire as life segments itself into some glorious times countered by devastating and catastrophic personal disasters. He struggles with character balance and ultimately rationalizes his behavior to be acceptable but with a small reservoir of guilt sometimes. His rationale to that dilemma is that guilt is not only normal, it's healthy.
This affable, charismatic character is a man named Joe. Joe served his military hitch as required by yesterday's draft and then entered the corporate world to begin his apprenticeship in business acumen.
His work ethic and business aptitude quickly propelled his career as promotions kept coming, as did salary increases. He came to be recognized as a business savvy master -- just short of a phenomenon. Ten years later, he left the corporate world with his beautiful wife (of the same relentless personality) and the rewards of two or three lucrative long shot investments.