That was the day I relized my destiny lay in fulfilling another basic huaman need.句中确lay 和fulfilling

题目

That was the day I relized my destiny lay in fulfilling another basic huaman need.句中确lay 和fulfilling分别是什么意思啊?
怎么翻才更确切呢?

答案

lay in--在于
fulfill--满足
That was the day I relized my destiny lay in fulfilling another basic huaman need.
请提供上下文以便翻译精确