Editor’s note: Harvey Mackay is one of several presenters at the June 19 Rocky Mountain Leadership Conference, sponsored by Utah Business Magazine. Utah Business has provided this column as insight into what Mackay will present at the conference. To learn about the conference, go to www.utahbusiness.com/rmlc.

Like so many others in business, I have accumulated my share of enemies in the course of a lifetime. It’s nothing to be ashamed of. "Forgive thy enemies" is very difficult advice for many of us to follow. After all, if we feel someone has harmed us, we tend to want to get back at them. As a result, we can carry our grudges for many, many years.

And, of course, it is totally counterproductive. I once fired an employee who then went into competition with me and began using what I felt were unfair business tactics. The psychic energy and accumulated bitterness that went into my thoughts of revenge consumed me for the better part of five years.

It was more than a waste of time, because whenever I thought about it, I grew vindictive and sour, and those attitudes spilled over into everything I touched. As a result, I lost more than the object of my revenge. Something had to give. And that something was me.

If you can’t take the best advice and forgive your enemies, then take the second-best course and forget them. The only way you can achieve true revenge is not to let your enemies cause you to self-destruct.

I learned a very similar story from Bernie Marcus when I was interviewing 29 people for my book “We Got Fired! ... And It’s the Best Thing That Ever Happened to Us.” In 1978, Bernie was fired as the CEO of the Handy Dan Home Improvement Center chain by Sanford C. “Sandy” Sigoloff, who ran the parent corporation, Daylin. Bernie was 49 years old and had never been fired before. He called it “the low point in his life.”

Bernie was wounded and aching. His first and only thoughts were about getting even.

“It’s interesting when you have a low like this, you reach one point where you have a chance of coming out or not coming out,” he said. “If you come out, you’re better than you ever were. If you don’t come out, you become what they commonly refer to as a loser. If you come out, it’s usually because of the influence someone has on you.”

Fortunately for Bernie, that influence was Sol Price, founder of Price Club, which has since become part of Costco. Price phoned Bernie and invited him to dinner at his home in San Diego.

Bernie got right to the point: “My contract with Daylin was worth a million dollars. Sandy broke the contract. I want to get back at him. Right now I’m suing Sandy for that million.”

To wage the suit, Bernie said he was eating up cash like it was going out of style. Price understood, and the strategy he offered was truly priceless.

After dinner, Price took Bernie to a room in his house filled with papers stacked five to six feet high and no furniture. They were all depositions from a lawsuit Sol had been involved with. He told Bernie that the lawsuit consumed much of his energy and strength for three years of his life.

Price told Bernie: “Why are you spending your young life suing somebody? Why don’t you just forget about it and go on and live your life? Otherwise, you’re going to end up with a room like this.”

The next morning when Bernie woke up, he said, he “really woke up. I called the attorneys and said, ‘You’re off the case. End the litigation. I’m going on with my life.’ ”

Just where did Bernie go? One year later, in 1979, he and Arthur Blank launched the Home Depot Inc., which became the fastest-growing retailer in U.S. history.

You will never get ahead of anyone as long as you are trying to get even with them because in order to get even with them, you have to stoop to their level. If you didn’t like their tactics, why would you want to emulate them?

I am not in any way advocating being a patsy for another’s bad behavior. But you must weigh whether bringing another person down will lift you up. Take the high road whenever you can — it’s usually not too crowded.

You must also consider what exacting revenge does to your physical and mental health. Will it really make you feel better? Consider the words of Martin Luther King Jr., an advocate for forgiveness and peace: “The old law about ‘an eye for an eye’ leaves everybody blind.”

Mackay’s Moral: Revenge may seem sweet, but it makes for a sour disposition.