Decorate the room with your television using shades on all of the windows and curtains that can easily be closed during the viewing of a movie. This is a quick solution to help rid glare while keeping your television in its original place.
Move the television in the room to a wall where you are not receiving reflecting light from the sun, causing glares.
Place an anti-glare shield over your television in any location of your room to help reduce glares and reflections of light. You can find anti-glare shields at local department and electronics stores to match the size of your television as well as the brand and exact model in some cases.
Use cardboard and black paper (construction paper or thick card stock) as a last resort to help block specific areas of light peeking through windows or open doors.