I personally do not believe in coincidence the universe has everything predetermined ( everything happens for a reason ).
But if we like to see it as a coincidence, I had a bad motorcycle accident back in April in which I suffered from a achilles tendon rupture so now I had a lot of time on the sofa and in front of my PC which brought me here to Steemit. I think without that accident I maybe would be not yet on Steemit.
One other lets call it coincidence is my sister she is born on the 1.11.79 at 1:11.11 AM and in school she always got a 1 in all school subjects. I am born on 23.04.78 and my parents got married on the 23.04.77
When I was 4 years old my mom lost a small silver cross with a ruby in the middle from her necklace on a 6 kilometer long sand beach at the Baltic Sea one year later we did our vacation at the same place and I found that cross one year later on this long sand beach my mom told me that story on my 18th birthday and gave me that cross. Coincidence, luck or was it predetermined???
Here is a picture of the cross
I love to consider coincidences as existing within our perception. Our mental capacity is not able to comprehend the scale of the universe, hence the unexpected, and our worry about it.