How to start?

I am lost, for one more time. Always when I start with a new project, my head is full of a lot of different ideas and subjects that I want to put together. And I love each one of them, so I cannot put them aside easily. “You never go as far as when you don’t know where you are going”, James Therree is quoting Christopher Columbus. I found this sentence very “convenient” for me, because I really don’t know where I am going to. But it’s always like this. In the end I will arrive somewhere.
How to start? I was thinking which is my subject? I need a story. I started writing down some words. Considering that I want to “play” with a fragmented narrative, with the deconstruction of narrative and time, I thought on the following: [memory and dream], [coincidence and fate], [fear(s)]. They are subjects that can create different space-times (chronotopes according to Bachtin) inside the one space of the stage. These should interact one with another.
If I try to imagine a picture now it would be an image like this…

Complexity: an interplay of spaces, times and bodies. Could the body of the spectator enter as well in the “installation” and experience the narrative, or (even) create his own narrative (?)