Arrange crystal animals round the candle as if they were warming their hands at the candles. Encircle with a 'daisy chain' of little pink or yellow flowers, flowers open the heart. Pink represents love and yellow represents lively conversation. Ivy would be lovely in your arrangement but avoid holly on the table as people will subconsciously 'flinch' from the prickles. Vary the centrepiece daily to help prevent stagnation.
Pictures are important.
In the Dining room it is best to have pictures of a happy party of people dining and laughing and having fun, perhaps at a picnic, someone's home or a restaurant. Do not position any handles, knives, jug handles, serving dishes, etc. Don't use cracked crockery or glasses. Throw these items out straight away. Make sure your choice of music is lively and happy, Christmas has many wonderful carols and songs so do play them but make sure that the volume is not so loud that people cannot talk.