Many ambitious people strive to win games defined by others, only to realize the prize isn't what they wanted and the sacrifices weren't worth it. True success comes from playing a game of your own design where the prize is meaningful to you.
Businesses often compete on superficial metrics (e.g., total sign-ups). The winner is the one who identifies and focuses on the 'dominant' metric (e.g., monthly active users) that inherently captures more value and makes other metrics secondary.
People often stick with activities they are good at, even if those activities don't lead to their desired outcomes. This is because the emotional discomfort of being a beginner in a new, more valuable area (like business) outweighs the logic of making a change.