The drive to engage in activities based on internal rewards rather than external rewards.

आंतरिक प्रेरणा

English Usage: Her internal motivation helped her complete the marathon despite the challenges.

Hindi Usage: उसकी आंतरिक प्रेरणा ने उसे चुनौतियों के बावजूद मैराथन पूरा करने में मदद की।