Fate.
It is sad to think about how lonely you can be sometimes. It is even sadder to regret the things you have missed. As for me, two years ago, in June, I got a terrific chance that I was not able to appreciate. Sadly, last year, it happened again. In june as well.
So I come to the conclusion that we have to do the things we want, no matter how puzzling they can be.
You only live once, and regrets are one of the most awful things that exist.