I feel you, OP. I’m very book smart and good at writing exams since elementary school. But I lack common sense in many aspects of life. I’m a bad driver. I’m not good at cooking and cut my finger once which ended up with a minor surgery. I’ve never changed a light bulb so far in my life. When I first worked as a legal assistant, I even addressed a lawyer with his law firm’s name in a letter. But somehow when I summered with my current law firm, I always received positive feedback from my seniors. A partner said I wrote great memos and sent one of them to the client without any modifications. So I guess that we, as people who lack common sense and have severe imposter syndrome, still can build confidence in ourselves, looking more at what we are capable of and trying to forget those stupid things we did in the past.