I had a conversation with a fellow freelancer at a coffee shop last week that got me second guessing my whole process. She said she logs her time after every client call or task, while I have always just estimated my hours at the end of the week. She argued that estimating leads to undercharging because you forget the small stuff like emails and quick revisions. But I feel like tracking every 15 minutes breaks my flow and makes me focus more on the clock than the work. Now I am wondering if her method is more accurate or if mine just helps me keep my sanity. She mentioned she lost a $500 project once because she underbid by 20 hours by guessing. Has anyone here switched from estimating to real time tracking and seen a big difference in their pay?