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Everyone has their own "entry point". Maybe you overdo motivation so you focus on discipline. Maybe you overdo discipline so you focus on motivation.

Both are tools you use to apply to your own exact situation. Person A may vote for Team Motivation, because that works for them. Person B may vote for Team Discipline. That works for them.

The more accurate your self-knowledge and self-awareness, the more effective you can apply the tools (discipline, motivation, etc).