The Devil doesn't destroy companies, ego does. By Dr. Norberto Lopez Garza. You don't need to be a lawyer to understand one of the most powerful lessons of the film The Devil's Advocate. Nor do you need to have seen the film to recognize a reality that occurs every day in the business world. It's impossible to know whether a company's greatest enemy lies in the market or is often sitting in the CEO's chair. There is a line spoken by John Milton, the character played by Al Pacino, that masterfully summarizes that idea. Vanity. Definitely my favorite sin, the all-natural drug. Many interpret that phrase as a reference to pride. I understand it differently. Vanity is that moment when success begins to convince us that we are indispensable, that we are always right, and that rules exist only for others. That temptation does not discriminate based on age, profession, or company size. It is faced by those who are just opening their first business, and also by those who run a consolidated organization with hundreds of workers. The aspiring entrepreneur often faces anxiety about rapid growth. They want to sell more, open another branch, hire more staff, and compete with companies that have been in the market for decades. This desire to advance is natural and necessary. Without ambition, entrepreneurship would hardly exist. However, when growth becomes an obsession, decisions begin to appear that seem small, but end up defining the future of the organization. Accepting a contract that is impossible to fulfill, promising more than can actually be delivered, neglecting quality to reduce costs, improvising contracts, and not seeking legal advice to save on fees, postponing compliance with tax obligations, thinking that it will all work out later. No company goes bankrupt because of a single bad decision. It's usually due to many small, incorrect decisions that, accumulated over years, eventually destroy what seemed solid. But if young entrepreneurs face the temptation to grow at any cost, those who have been in business for years face an even greater risk, believing that experience makes them infallible. I've known successful entrepreneurs who built admirable organizations thanks to their discipline and work ethic. However, as the years went by, they stopped listening. They no longer accepted differing opinions. They dismissed any criticism. They considered it unnecessary to consult specialists. They thought their experience solved any problem. That is precisely where true vanity appears. Not the one that boasts about luxury cars or large offices. But rather the one that convinces the entrepreneur that he no longer needs to learn. Markets change. Technology changes. Consumers change. The only thing that should never change is the willingness to keep learning. As a lawyer, I have observed for more than two decades labor, commercial, and civil conflicts that could have been avoided with a very simple decision. Listen to advice in time. Many lawsuits do not stem from bad faith, they stem from overconfidence. Businessmen who never formalized agreements because, we have always understood each other. Partners who never signed the rules of the operation because they were friends. Employers convinced that they would never be sued because they treated their workers well. Experience teaches that trust is essential for doing business, but it should never replace legal certainty. Another aspect that I find extraordinary about the philosophy of the devil's advocate is that evil is never presented as something unpleasant. He always arrives dressed in success. Recognition. Prestigious. Of money. The same thing happens in business. Decisions that put a company at risk almost never seem bad when they are made. On the contrary, they are usually accompanied by phrases that we have all heard at some point. That's how all the competition works. If I don't do it, someone else will. This will be a one-time only. Nothing ever happens. Those phrases are often the beginning of much bigger problems. The true strength of an entrepreneur lies not only in identifying business opportunities. It also lies in knowing which opportunities to reject. Because not everything that generates money brings peace of mind. And not every contract represents a good decision. Not every customer is worth any sacrifice. And not all profit justifies losing reputation. There is one asset that no financial institution can lend and no insurance can compensate for when it disappears credibility. A company can recover from a bad season. It can survive an economic crisis, it can even reinvent itself after losing market share. But regaining the trust of customers, employees, suppliers, and society is a much more difficult task. Therefore, the advice is exactly the same for both the entrepreneur who is just starting out and for someone who has spent decades building an organization. Never let success make you deaf. Surround yourselves with people capable of contradicting you. A listen to your collaborators. Consult your advisors. Accept that there will always be something new to learn. And above all, remember that true leadership is not measured by the size of the company, but by the ability to remain humble when triumphs come. Perhaps that is the true lesson that the devil's advocate teaches. The biggest enemy of the entrepreneur is rarely called competition, it is often called ego. And when ego begins to run the company, failure ceases to be a possibility and becomes merely a matter of time.