One productivity hack that I've used a few times is to flip it around. Rather than track work time - I track non-work time. I set aside 20 hours (or whatever)

One productivity hack that I've used a few times is to flip it around. Rather than track work time - I track non-work time. I set aside 20 hours (or whatever) of coding time for a project during the week - and then track all the things that stop me doing that and subtract it from the total. By focusing on tracking the interruptions rather than the work - the impact of poor multi-tasking/poor-scheduling becomes much more obvious. [Edit: And in case it wasn't obvious - the time is tracked for me, not the client]