Bach Flower Chestnut Bud is for failure to learn by experience, leading to an inability to make progress in life. The person keeps repeating the same mistakes, such as falling over again and again for the wrong partner, or continuing to work in an unsuitable job. 
Instead of learning from past mistakes, Bach Flower Chestnut Bud people try to forget them and therefore have no basis on which to make future decisions. They may suffer recurrent ailments but never question why they keep returning and thus fail to deal with the root cause.
The positive potential of Chestnut Bud is quoted by Dr Bach: 
´This remedy is to help us to take full advantage of daily experiences and to see ourselves and our mistakes as others do.´ 
The positive Bach Flower Chestnut Bud personality observes his or her own mistakes with objectivity, and learns from every experience, gaining knowledge and wisdom so as to move forward in life. Mentally active, he or she also observes and learns from others.
Suggested Use:
Dilute two drops of Bach Flower Chestnut Bud in a glass of water and sip at intervals. Replenish as necessary
For Multiple Use:
Add two drops of Bach Flower Chestnut Bud to a 30ml mixing bottle (you may combine up to seven remedies in this bottle), top up with mineral water and take four drops at least four times a day.
If necessary, the Bach Original Flower Remedies can be dropped neat onto the tongue, or rubbed onto the lips, behind the ears, or on the temples and wrists.