I saw this on my way to Namaste yesterday to buy tarot cards for a friend's birthday gift.
While I was browsing, I met a woman who was picking out her first deck as a birthday gift to herself. She asked me for a recommendation and I suggested the Centennial Smith Waite, the same deck I was buying.
No big conclusion here, just a series of sweet moments. Synchronicity doesn't have to be big and mysterious to be worth noticing.
I think most of "luck" is paying attention to the good things that are happening all the time.