Three moves you can make tonight. Free.
None of these need a compass, a Kua number, new furniture, or money. Pick one. Do it before bed.
Move the bed so you can see the door from where you sleep.
The command position. The traditional reason is energetic; the modern reason is autonomic. Most people sleep noticeably better within a week of moving the bed.
Cover any mirror that reflects you while you sleep.
A throw or a curtain over the wardrobe mirror at night is enough. Movement in your peripheral vision while half-asleep keeps the nervous system alert.
Push the bed against a wall and add a real headboard.
A floating bed in the middle of the room feels unmoored. A solid headboard against a solid wall gives the nervous system something steady at your back.