"What does your instinct tell you?"
I never heard of that phrase. "What does your heart tell you", sounds familiar though. But that has to do with deeper emotions. Instincts are basic gut feelings. Animals have instincts yet I doubt their instincts tell them that another animal has special talents. But when they sense danger, their instinct tells them to run.
That's why QGJ instructed Anakin to trust his instincts during the pod race.
And when we take this one step further (or back) to ROTJ. Luke senses that Leia is his sister without being told. OB1 did not say "Your instincts serve you well", but he said "Your INSIGHT serves you well." And his insight was given through use of the Force, not through instinct.