Some of the biggest challenges MrBeast faced on his journey include maintaining a consistent and engaging content strategy to keep his audience interested, managing the logistics and costs associated with his large-scale philanthropic endeavors, and dealing with the pressures of fame and public expectations while staying true to his charitable values.  Additionally, he has had to navigate the complexities of managing a rapidly growing media empire, including handling a team of employees and collaborators and ensuring the sustainability of his business ventures.