Getting to greatness is not a journey of likes and dislikes that an average person leads her life with.
Greats have likes and dislikes, but they do not let their feeling decide their actions.
They will do it anyways irrespective of their liking status, if it leads to greatness.
This is the emotional labour to greatness.
Not much, but there is certainly one. When everyone is lining up to search that give the right answers, the people who make a dent are searching and linning up the right questions.
Success starts with at least a right question, if not a streak of them properly arranged.