I use the following system 1. a normal calendar (webDav synced to my devices) with all my recurring tasks set up. I also include blocks for work as weekly recur

I use the following system 1. a normal calendar (webDav synced to my devices) with all my recurring tasks set up. I also include blocks for work as weekly recurring events. In that way my week is set beforehand and if something comes up I can edit the scheduled events and compensate for lost hours 2. time tracker - I need to track my projects automatically and not log them manually. This gives me 2 benefits - I don't waste time (and don't forget to) log the time - I know exactly what I've spent time on The best time tracker for Mac is timingapp.com, but expensive. However it's integrated with my IDE and I can map a certain project (directory/filename) to a certain client once and it'll be added to this project automatically in the future. I think they have some reports you can use for your monthly billing. Another one not that good but still wokring is rescuetime.com, they don't automate the path/filename part and thus you can track per app, but not per filepath in that app.