You have to learn to trust/follow your 'instincts'. [=to trust your feelings about what is right or true even when you cannot be sure that it is right or true]
Her 'instincts' told her that something was wrong. [=she believed that something was wrong even though there was no obvious reason to believe it]
Her 'killer instincts' have helped her become one of the top tennis players in the world.
(..) as Lord Commander. But she won't be safe there, not with the Boltons after her. She's my cousin. We should help her. That was my instinct as well. Our lord has spoken. Gather the Knights of the Vale. The time has come to join the fray. You invite the enemy into our city? I did. (..)2016 TvShow: Game of Thrones Title: Book of the Stranger Season: 6 Episode 4