Not quite. If you're truly in the Zen state, more coincidences will happen.
And they will be outrageous coincidences that have no business happening, and simply don't happen at all when you're not in the Zen state.
Selective attention only goes so far as an explanation. (Based on my experience, anyway.)
But that doesn't explain the outrageous coincidences.
Here's a koan for ye.
"I'm old and forgetful," said Joshu. "Have I met you before?"
The monk answered, "No sir, you have not."
"Well then, sit down and have a cup of tea with me," said Joshu.
Another monk came up to ask Joshu a question.
"Yes sir, of course you have," said the second monk.
Later, when the others were gone, the managing monk of the monastery came over to Joshu, who was making another pot of tea.
"How is it," said the manager, "that you make the same offer of tea whatever the reply to your question?"
At this Joshu stood up.
"Manager!" he shouted. "Are you still here?"
"Of course I am!" the manager answered.
(Stolen and modified from here.)
Don't fight forces, use them R. Buckminster Fuller.
(Or as we call it in the UK - Mornington Crescent.)