Plan your life journey from four dimensions. First, life breadth: how much of the world you have experienced, how many places you have been to, how many different social classes and perspectives you have encountered, how many possibilities you have tried. Breadth determines how many options you have in life. Second, life height: the level from which you view problems, whether you can see the long-term, understand the essence, and make decisions beyond emotions. Height determines whether you will take detours. Third, life depth: how deeply you master a skill or subject, whether you have a truly valuable ability, whether you can continue to deepen in a field, and whether you can withstand the test of time. Depth determines your irreplaceability. Fourth, life thickness: how long you can endure and how steady you are, including physical health, cash flow, emotional stability, and the number of leverage points. Thickness determines whether you can keep moving upward.