The answer would be Detail
Imagination can overcome reason when for example a person is paranoid about someone or something and conjures up possible fearful situations or scenarios that could result from being in that situation or with such and such people when in fact the actual living of that situation is usually far less fearful than imagined but it can immobilize a person if he/she succumbs to their imagination.
C
you don't need to know how I know.
Because of the people who encouraged and supported her.