Allornothing, it does take time to get used to, particularly when you are still just getting used to wearing BA which in itself freaks some folks out!
Ever used an etch-a-sketch? You know, you draw a single line using left/right and up/down controls. Try imagining as you enter a building that you are drawing that line, build a picture in your head of the left/right turns, eventually you will build up a plan of the building on your imaginary etch-a-sketch.
Try this with somewhere familiar, say at home, then gradually in less familiar areas. No, you don't need to walk around with your eyes closed
remember you are practicing building a plan in your head, not the whole BA thing.
One other important point, don't bluff it! I know it might be a difficult thing to discuss with the rest of the crew, but you need to let them know that you are having difficulties before you find yourself in a dangerous situation at a job.
But don't worry, keep working at it and you'll get more confident as time goes on.