the quality of being willful; intentional or deliberate choice, often disregarding reasons or consequences.

इच्छाशक्ति

English Usage: Her willfulness in pursuing the project despite the risks impressed her colleagues.

Hindi Usage: परियोजना के लिए जोखिमों के बावजूद उसकी इच्छाशक्ति ने उसके सहयोगियों को प्रभावित किया।