For starters, make sure that you place your carpet strategically in the room in such a way that there is the least amount of foot traffic on your carpet. At the entrance or exit of the room, you may want to place a rug that is neither as expensive nor as difficult to maintain as an intricately woven carpet with fine materials.
Another important point is to make sure that you regularly vacuum your carpet. It is inevitable that dirt, and grit will get stuck in your carpet even if there is no visible sign of it. The longer these particles are allowed to build up on your carpet the harder it will be to get them out in one vacuuming session.
Lastly, it is a good idea to get your carpet cleaned professionally ever six to twelve months even if there are no visible signs of damage. Getting your carpet cleaned professionally in a timely manner will ensure that any damage invisible to the naked eye is reversed before it can become a bigger problem that may prevent your carpet from being restored to the form it was in on the day that it arrived on your doorstep.