If we look at this from a buddhist's point of view, then there is no luck: the author did something in past that allowed him to use this opportunity and what he

If we look at this from a buddhist's point of view, then there is no luck: the author did something in past that allowed him to use this opportunity and what he did could be completely unrelated to his work, e.g. he wrote a blogpost long time ago that he didn't consider important, but it really helped a few people.