The Friday afternoon scramble every freelancer knows It's 4:47 PM on Friday. You're staring at a blank timesheet trying to remember what you did on Tuesday afternoon. Was that the Acme dashboard work? Or the OAuth integration for the other client? Did you spend 90 minutes on that bug, or was it closer to two hours? Did the client call run thirty minutes long, or did it just feel that way? So you do what every freelancer does. You guess. Why we under-bill ourselves Here's the dirty secret most freelancers don't say out loud: when we forget, we round down . Not up. Not even to the nearest reasonable estimate. Down. For three years I assumed I was just bad at remembering. Then I actually started measuring. The result: I was losing roughly 6 billable hours a week to "I have no idea what I did between the 10am call and lunch." At a modest $90/hour rate, that's $540 a week. $2,160 a month. $25,920 a year. Quietly evaporating between context switches. What I tried before it clicked Pen and paper.…