Bless your sacred space with sweetgrass. Sweetgrass is burned at the beginning of prayer, smudging and purifying ceremonies...Use to cleanse a space and attract positive energy.
Light the end of your sweetgrass braid, then blow out the flame so that it continues smoking. It is the smoke that cleanses and draws positive energy to you. Waft the smoke to yourself, using your hands to cup the smoke and 'wash' yourself with it. You may also use a feather, or your hand, to fan the smoke.
If you are cleansing a space, walk the perimeter of each room, remembering closets and niches, and leave a window open to give negativity a path to escape. Be sure to repeat your Intention and focus on what you are asking for throughout the ceremony.