Grieving lost dreams

"Life is a series of choices, and when you pursue one passion, you let go of another. There’s a certain sadness to that." - Galit Breen 
We do not always have a choice in taking a different path. Sometimes it is out of our hands. A person we love dies, or moves away, or a relationship ends that was not your choice. Other times, it is us who move out of our comfort zone and create totally new realities for ourselves. 
The point is, every path not taken holds a beautiful possibility. And we can become attached to that possibility. I think it's natural that we grieve dreams and fantasies and visions for what we thought or hoped would be. We need time and space to accept and mourn the loss of ideas as much as the loss of people or things.
And in our hearts, we may always hold a little bit of hope that somehow, some way, that future might unfold, in an unexpected way, while accepting that right now, it is no longer possible.