That's a stretch. "Thou shalt not covet" is only part of it. It goes on to say "thy neighbor's..." So it doesn't just generally say that we shouldn't covet, period. It says that we shouldn't covet what belongs to other people, as in "I wish that I owned that nice car instead of Jim."
And tell me how you could covet your own stuff? You can't. If it's not yours, its someones elses (thy neighbors).