Larch is the remedy for people who feel that they are not as good as others and that they are bound to fail. They lack confidence in their ability to succeed and so often do not even bother trying. (cf Elm people, where it is the desire to take on too much that causes the temporary doubt.)
The remedy helps people in this state to go ahead regardless of thoughts of success and failure. More able to take risks and be involved in life, they get more out of living.
Dr Bach's description - For those who do not consider themselves as good or capable as those around them, who expect failure, who feel that they will never be a success, and so do not venture or make a strong enough attempt to succeed.