[tgflynn]

I recommend using a time tracking app of some kind. The goal isn't to produce timesheets for your clients, just for you personally to keep track of how much time you spend working on projects.

For this to be helpful you need to be very conscientious about using it. When you are clocked in you shouldn't be doing anything but project related work.

One disadvantage of this is that it's easy to forget to clock out.