Psychology
This is my favorite crystal for clearing negative energy. I have several of them around my house. This crystal does not need to be cleared as others do and it works for people too. You can put it in your pocket while traveling.
Salt is a great cleanser. You can shake salt on your carpet and let it absorb all the odors and energies in the room. Let it sit for an hour or two, and then use your vacuum to clean it up.
You can also use epsom salts in the bath to draw out toxins in your body. By creating a chemical force in the water, the toxins will be drawn to it, and you’ll feel a lot better, too.
Playing music with high vibrations (love) can help heal an area, and will help you feel better too, if you really like the music you pick. There is a fellow that once lived, whose name was David Hawkins, who measured the “level” of music in relation to spiritual evolution.