Not more accurately tracking my hours worked with estimates, then wondering why I feel like I've worked so hard for seemingly so little monetary gain.

I use my location history through Google to determine when I've gotten into work.

@tisaconundrum I work 100% from home for multiple clients. So, unfortunately, that won't work for me. Sometimes I think that a task will take less time than it's worth to bill. An un-rememberable number of hours later I look at the clock and think "dang...I should've been logging that".