Purchase an HDMI cable with a locking feature. The components to which you attach this cable must be able to accommodate the locking screw of the cable.
Purchase cable clips if your cable will run along a wall or another surface for more than a few feet. Follow the provided instructions for installing the clips and use them to keep your cable from moving. This also holds much of the weight of a cable, thus making any parts that may hang lighter.
Unwind only as much cable as you need if you are not using clips and your two connecting devices are close to each other. Your goal is to keep the weight in a central position, so you should leave the majority of the cable wound to reduce the stress put on either end. In many cases, the cable will resemble an "L" shape, as the bulk part should be directly below the port in the television and to the side of the second device. If there is no room to place the would cable near the second device, it can be placed on the floor as well.
Keep the cable from being bent near the head, if possible. Thick cables will often stop working without falling out of the sockets if they bend too far for too long.
Do not leave the cable exposed to hands or feet traffic areas. Every time somebody trips over the cable or accidentally yanks the cord out, it can lose its ability to remain seated. If possible, run the cable through a wall or underground.
Unplug the HDMI cable when necessary by grabbing the thick head and not the actual cable. Cables are soldered to the conducting metal pieces, not the heads. The heads are meant to protect them from being torn apart on the inside.