1) Consider a swirly patterned carpet runner
2) Hang a faceted crystal from the ceiling
3) Hang art or lighting along the sides of the hallway to distract the chi from side to side.
4) Avoid placing a bed, seating area or desk in direct line of the door/hallway
Let me know if you have this situation in you space, if you notice any impact, and which cures you'd consider for it in the comments below.