Breakthrough achievementDelayed gratificationMental fortitudeNapoleon HillPerseverancepersistencePhilosophy of AchievementSuccess principlesThink and Grow RichValley of disappointment나폴레온 힐
Showing posts with the label Breakthrough achievement
Andrew WilesBreakthrough achievementFermat's Last TheoremIntellectual challengeMathematical persistencePerceived impossibilityProblem-solving methodologyResilience in research앤드류 와일스