This is the 13526th most frequent Russian word.
настойчивость
Persistence.
Here, 'настойчивость' refers to the quality of being persistent in achieving goals despite difficulties.
Её настойчивость помогла ей добиться успеха в бизнесе.
Her persistence helped her succeed in business.
In this sentence, 'настойчивость' is used as a general statement about the importance of the characteristic in leadership.
Настойчивость — важное качество для любого лидера.
Persistence is an important quality for any leader.
In this context, 'настойчивость' illustrates the action of continuing to strive and overcome challenges.