Starting from the bottom, from memory, or from an instrument breaks blank-slate paralysis
Three concrete approaches to begin a track from nothing: (1) Start with the foundation — the lowest-pitched or rhythmic layers (bass, drums) that anchor everything else; (2) Start with what you hear — any melodic or rhythmic idea already in your head, however it arrived; (3) Start with what you know — use a physical instrument to generate ideas, exploiting your embodied relationship to it even if the final track will be electronic. Each approach collapses the infinite option space to a tractable first action.
Examples
If you hum a bass motif on the bus, open the DAW and record it first. If you play guitar, noodle until a riff emerges then translate it. If neither works, lay down a kick drum pattern and build from there.
Assessment
For a new session, pick exactly one of the three approaches before opening the DAW and follow it for at least 20 minutes without switching strategies. Describe what emerged.