It was a rewarding endeavor.

Meaning

The effort or undertaking was worthwhile and fulfilling.

Examples

• John: 'Writing that book was a long process.'
• Alice: 'But <b>it was a rewarding endeavor</b>, I'm sure.'
• John: 'Yes, <b>it was a rewarding endeavor</b>.'
• Alice: 'Completing my PhD was challenging, but rewarding.'