I completely disagree. Discipline can lead to success, but also to chaos...Nazi Germany was built on discipline and relegated to history's first lesson in creating chaos.
Anarchic, or chaotic, is the universe we live in. To bring order out of chaos takes organization and effort, but discipline isn't a necessary part of that formula--it can be, and often is, but it must be discipline with discretion. Perhaps, consistent effort at the most opportune times would be a better generalization in the overall scheme of things...as opposed to the term discipline.
Discipline in a talent or trade is important to improving one's craft...but it is hardly a must...some are gifted in their fields and perform incredible tasks with apparent ease.
Your statement is vague...and generalizations always have exceptions in their conclusions.