Warren Buffett, the renowned investor known as the "Oracle of Omaha," has admitted to making financial errors throughout his career. Surprisingly, he identifies his initial investment in Berkshire Hathaway as his worst. Though now synonymous with his immense success, the early days of this investment were a miscalculation, according to Buffett. Details surrounding the initial issues with Berkshire Hathaway were not fully elaborated in this report. This disclosure offers a rare glimpse into the fallibility of even the most successful investors. The revelation highlights that even Buffett experiences setbacks on the path to financial prosperity. The story presents a paradoxical irony, as the company he once deemed a poor investment ultimately became the foundation of his wealth.