Serendipity. Which is kind of like luck, but means all the other things lined up at the right time, too. Maybe synchronicity is a better term

you know, you have just summarized Malcom Gladwell's entire book in one line -- The Outliers.
it examines the succesful and often how surprisingly fortunate they were to be in the right place at the right time and with the right background.
luck is far more prevalent than most people are comfortable with, re: success in any venture.