The most direct answer to this question is that we love our work when it contributes to our happiness.
But this answer needs clarification and concreteness — the ideas of love and happiness are too broad, and there are too many misconceptions around them.
This is the first of a series of posts that will explore these misconceptions to give a clear, concrete answer to the question of what it really means to love our work.
Here are all the other posts in the series:

Pingback: What does it mean to love our work? It’s not about success (Part I) - Alan Furth — The Blog
Pingback: What does it mean to love our work? Hint: It’s not about success (Part II) - Alan Furth — The Blog
Pingback: Beyond flow: meaning as the key for truly fulfilling work : Alan Furth — The Blog