What does "knowing what you want" mean?

What does knowing what you want mean?

I hear people say all the time, "I want someone who knows what they want". Now to me, that's never really made much sense. I feel like most people know what they want in a partner and life, but things aren't so simple sometimes. Maybe you get into a relationship and feel like it's not working for whatever reasons. Maybe you're not happy with where you are in life and feel like you're just not in the right place emotionally. Everyone has their own justifications for not continuing a relationship. So I want to know what you think. What does it mean to you?

What does "knowing what you want" mean?
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