I do the following. When consulting for clients: I use an email draft with subject: <client name> Tasks done for week ending 7/Feb/2020 -- task

I do the following. When consulting for clients: I use an email draft with subject: <client name> Tasks done for week ending 7/Feb/2020 -- task 1 -- task 1 detail 1 -- task 1 detail 2 ... -- task 2 -- task2 detail 1 .. When working on own projects: - I use a physical register - Date (at the top) - organized notes ... - random doodling/scribbling Edit: On a Monday morning, I send that email to myself. So that that week's activities are always searchable by that week ending date. It helps me in my client reporting.