Producing Durations

How long does it take me to work on a track?
Well, when doing tracks, there are two phases for me. First, the planning phase. Before working on a track, I make a detailed and often complete blueprint for the track in my head. The general idea and concept of the track, what synths to use, what kind of drums, samples, down to the percussion and the structure and patterns of that track. This often builds on an idea for a track i have suddenly, for example while taking a walk or cooking or watching a movie or anything else. I usually have the "complete" track in my head within seconds. In other cases, I have an idea for a track (usually a more "general" idea) and keep it, and only add more detailed layers to it later.
This then can span a long amount of time, I often add on ideas of tracks I had 1, 2, 5, or 20 years ago. Sometimes I have a track in my head for a decade before putting it down to actual creation. As I got older I got to diving faster into the past, and have made tracks that built on ideas I had in my early childhood for example.
So, there is a lot of work and especially a lot of time involved in creating tracks for me.
I have the track planned in my head. What now? Actually creating it. What happens then is between two extremes. Sometimes I create the track just as it is in my head - even though it of course sounds different when actually doing the melodies and patterns and structures, which sometimes has interesting results. But most often, when producing the track I get new ideas, and change the track then according to them. It's a matter of "going with the flow". I arrived at the point where I don't follow any notion of how the track "has to be" anymore - it can sound any way it can while producing it. Sometimes the end result is the complete opposite of how I intended the track to be (for example planning a Speedcore track and ending up with producing a Slowcore track). This "producing" part is usually very quick and fast and if I have planned the tracks thoroughly in my head already, I for example can produce a lot of tracks in just one weekend or even one night.
That the tracks change while producing doesn't mean I "discard" the ideas and planning then. It's more a marriage of sonic idea and actual production. A dualism that is complex and can be hard to navigate but it's what I focus on by now.