What are common relationship blind spots?

Always dating the same incompatible type (you notice a pattern only after the 3rd breakup). Repeating the same argument (you both want the same thing but word it differently). Attracting similar dysfunction (you grew up with anger; you date angry people). Avoiding intimacy the same way (you always work too much, pull away, etc.).

How do I discover my blind spot?

Look at patterns: What have your last 3 partners had in common? What fights repeat? What do exes say about you that stings? Ask trusted friends: "What do I do in relationships?" Their answer is often your blind spot. Therapy is the fastest way to illuminate what you can't see alone.

Can I fix my blind spot?

Yes, once you see it. If you keep dating emotionally unavailable people, the fix is developing your own emotional availability and recognizing unavailability faster. If you repeat the same fight, the fix is understanding the underlying need driving it. Blind spots are fixable; the first step is visibility.