When I was in my early 20s, I suddenly discovered that most people didn’t have the same internal models as I had.
Here is a page from a computer-based diary (written in HyperTalk) which I designed to mirror how I think about the year… how I actually see time in my head.
Each week is envisaged as an upwards-slanting ellipse which moves from Monday (lower left) to Friday (upper right). Successive weeks form a vertical helix with the future at the top.
My 3-D view of time does make using a conventional, rectilinear calendar a major challenge.