Think of your life like a story in a book. When people say, "Don't compare your chapter 1 to someone else's chapter 10," they mean don't feel bad if you're just starting out or learning, while someone else seems more experienced or successful.
Imagine your life at the beginning (your "chapter 1") as a time when you're figuring things out. Now, think of someone else's life further along (their "chapter 10") where they've been through a lot and accomplished more.
Comparing your chapter 1 to someone else's chapter 10 is like saying, "Why am I not as good as them?" But it's not fair because everyone goes at their own speed. What's important is what you're learning and experiencing on your own journey.
So, this idea is like a reminder to be kind to yourself. Success takes time, and everyone's journey is different. Focus on your own growth, learn from your experiences, and enjoy the process. That's what really matters in the end.