Gentian is for when you are discouraged; despondency. Sufferers are easily discouraged and depressed when things go wrong or when faced with difficulties. Their depression is always from an identifiable cause. It is also useful for children discouraged about their schoolwork.
The positive potential of Gentian is the realization that there is no such thing as failure when one is doing one's best no matter what the results. No obstacle seems too great and no task too daunting to undertake.