After reading asmartbear's "The Product/Market Fit Formula": I gained a lot from it. Here are a few points I believe can be directly applied to life and career, shared with everyone.

PMF appears to be a survival line for startups, but fundamentally it is a system to combat self-deception: first, figure out who you are, then let reality give you feedback, and continuously iterate to avoid spinning in the wrong direction.

The first step is never chasing the hot trend, but personal alignment. Passion is just fuel, not a moat. True advantage comes from your leverage: a unique combination of talent, taste, and experience. Instead of asking what the world needs, ask why you are more suited to do this. You should look for something you are willing to invest in long-term even if it doesn't make money, because you find it hard not to do.

Next is facing the truth. Don't let "I hope it's true" block "what it actually is." Acknowledging your capability boundaries is not shameful; it simply signals whether you need to learn or find complementary people. Equally important is deciding what you won't do. Don't take rejection personally; it's not a denial of your character but data on fit.

Act in uncertainty. Waiting for perfect information usually results in never starting. You can only do first, then turn the unknown into feedback through action. Feeling unqualified is normal; many seem confident but are actually exploring. Listening is fine, but the path must be self-determined because only you have the full context.

Treat time as an asset to be allocated. At any moment, you should be able to answer: what is the single most important thing I need to do now? What is the bottleneck blocking me from the next milestone? Often, the most uncomfortable and avoided question is the one to solve first. Besides key goals, doing other things well enough is sufficient; perfectionism often is an escape from key challenges.

Finally, keep adjusting. Be stubborn about your vision, but flexible on details. When reality proves an assumption invalid, don't fight it—pivot quickly. A setback may be accidental, but repeated feedback is a signal. "I was wrong" is hard to admit, but it’s often the fastest way back on the right track.

And a reminder: beware of the comfort zone trap. You might be doing things that are convenient, controllable, and seem effortful, but they may not push the milestone forward. Truly necessary actions are often more awkward: seek feedback, do exposure, promote yourself, face rejection.

Yueya summarizes: first find your personal fit, then take minimal-cost actions to let reality tell you the truth, and repeatedly focus on key bottlenecks for iteration. Your greatest competitive advantage is not becoming someone else, but becoming the irreplaceable you.