Core Insights - Mark Cuban, at 67, continues to work and has no plans to retire, contrasting his earlier beliefs in the FIRE (Financial Independence, Retire Early) movement [1] - Cuban's perspective on retirement shifted after reading Paul Terhorst's book, which inspired him to save aggressively and live frugally [2] - After selling his company MicroSolutions for $2 million, Cuban initially retired at 30 but later returned to the workforce due to his competitive nature [3] Investment Strategies - The FIRE movement emphasizes serious saving and investing early, with more intense rules for those planning to retire early [5] - Living "like a student" financially means maintaining a frugal lifestyle even when income allows for more luxurious spending, enabling greater investment potential [6]