perseverance

noun

Etymology: From Middle English perseveraunce, from Old French perseverance, from Latin persevērantia.

1. Continuing in a course of action without regard to discouragement, opposition or previous failure.

   “It had taken nine years from the evening that Truman first showed up with a pie plate at her mother's door, but his dogged perseverance eventually won him the hand of his boyhood Sunday school crush.”