A focus-first week, built on the neuroscience of attention
One domain per day. Three deep-work blocks each morning. Sacred mornings, daily guitar, contract work in the afternoon trough, and weekends reserved for recording and the people who matter. Designed around what the research actually says is sustainable.
The Week at a Glance
Color-coded time blocks. Hover a card for detail; print this page for a reference card.
Why the Week Is Built This Way
The research behind the structure — and what it gets right.
Core finding. The research converges on a hard ceiling: roughly 3–4 hours of true deep work per day is the most that most people can sustain. The limit is neurochemical, not a matter of willpower — the focus-supporting neuromodulators (acetylcholine, dopamine, norepinephrine) deplete over a session and need recovery. Anders Ericsson's foundational study of elite violinists found essentially no benefit beyond about four hours a day of deliberate practice and reduced returns after two; the top performers averaged about 3.5 hours of deliberate practice daily. Cal Newport's work on deep work lands in the same place: one to four hours of distraction-free work is what's actually sustainable.
“The ceiling on deep work is biological. You can schedule eight hours of focus; your brain will only pay out three or four.”
— the synthesis of Ericsson (1993) and Newport's deep-work researchNathaniel Kleitman — co-discoverer of REM sleep — proposed in 1963 that the 90-minute sleep cycle continues while we're awake as the Basic Rest-Activity Cycle (BRAC). Roughly every 90 minutes the brain shifts from a focus phase into a recovery phase. Peretz Lavie at the Technion confirmed the pattern through cognitive-performance studies: the trough is real, and it can't be willpowered away. The 90 / 15 / 90 / 15 / 60 morning blocks are built directly on this rhythm — ride the focus phase, then take a genuine break before the next one.
Sophie Leroy (University of Minnesota, 2009) named the cost of jumping between tasks “attention residue”: part of your mind stays stuck on the previous task. A widely cited UC Irvine finding puts the cost of an interruption at roughly 23 minutes 15 seconds to fully refocus, and the American Psychological Association estimates task-switching can cut productivity by up to 40%. This is the whole case for one domain per day — no re-entry cost, no residue.
“People experiencing attention residue after switching tasks perform poorly on the next task.”
— Sophie Leroy, University of Minnesota (2009)Ericsson's conditions for deliberate practice are strict: full concentration, a clear goal, and immediate feedback. Its benefits taper after about two hours and are largely gone by four. Singing while playing roughly doubles the cognitive load, so shorter focused sessions win. The 30-minute morning block is correctly sized — it primes the day and accumulates real practice without spending the deep-work budget before it starts.
Goal-free play in the evening activates the brain's default mode network — the state that consolidates the day's learning, generates unexpected connections, and restores attention. The evening music isn't wasted time. It's the recovery that makes the next morning sustainable.