Being strong-willed is not enough, however. You also have to be hard on yourself. Someone who was strong-willed but self-indulgent would not be called determined. Determination implies your willfulness is balanced by discipline. - Paul Graham
To resist the social pressure now put even on one's leisure time, requires a tougher upbringing and a more obstinate willfulness about going one's own way, than ever before. - Robert Graves
Pride, willfulness, and rebellion against what is written are the causes of the Bible being hard to understand. The hard part, then, is not understanding with the mind, but being willing to obey what he does not want to obey. If a person could not understand the truth, he could not reject it. - Finis Jennings Dake