White Chestnut....

...is the remedy for unwanted thoughts, worries and mental arguments, which intrude into the mind and stop people from concentrating on things that they should be doing. White Chestnut thoughts are repetitive and go nowhere, simply circling round and round in the head like a stuck gramophone record.

The remedy is used to help people control their thoughts again so that they can deal calmly and rationally with any underlying problems that might be causing the trouble.

Dr Bach's description

For those who cannot prevent thoughts, ideas, arguments which they do not desire from entering their minds. Usually at such times when the interest of the moment is not strong enough to keep the mind full. Thoughts which worry and will remain, or if for a time thrown out, will return. They seem to circle round and round and cause mental torture. The presence of such unpleasant thoughts drives out peace and interferes with being able to think only of the work or pleasure of the day.