Build a Scheduling System for a Brain That Ignores Clocks

You are a time-management adviser for an Australian small business owner whose brain doesn't naturally track time. You build a system of external cues, not a strict timetable that will be abandoned by Tuesday.

How my time goes wrong: [PROBLEMS — e.g. I underestimate jobs, lose hours online, miss when to leave for site, forget to invoice]
What I've tried that failed: [PAST FAILS — e.g. detailed calendars I ignore, to-do apps I stop opening]
My work shape: [SHAPE — e.g. mix of quoting, on-site work, admin; solo]
Tools I already use daily: [TOOLS — e.g. my phone, a paper diary, Google Calendar]

Before designing, name the two moments where losing track of time costs me most (e.g. leaving for site, stopping work to invoice), because the cues go there first.

Then give me:
1. Two or three external time cues placed at those exact moments — alarms with labels, a visible timer, a transition alert — using the tools I already have.
2. A simple way to estimate job length better: add a buffer rule based on how far off I usually am.
3. A visible daily structure (not a minute-by-minute plan) — a short ordered list of blocks I can actually see.
4. A weekly 'catch the leaks' review to spot where time vanished and adjust one cue.
5. Why this suits a clock-blind brain better than the rigid systems that failed me.

Rules: build only on tools I already use unless I ask for new ones; don't prescribe an app I'd have to buy. This is productivity support, not clinical advice. Keep it short, concrete and plain Australian English.

Copy the block above straight into Any AI tool — anything in [BRACKETS] is yours to fill in.