[massysett]

The checklist doesn't have to be perfect. Just continually improve it.

I keep several checklists - some I use several times a week, others every few months or so. If I notice something needs to be added to the checklist or removed, I do so.

It's always better to start with an imperfect checklist vs not having any checklist at all. With no checklist, you start from scratch every single time. Not starting from scratch allows you to focus on marginal improvements with each use.