Yeah, this works for me. One option I did early on was run a Pomodoro timer and bill every half hour, but a client brought up that I should also be charging for

Yeah, this works for me. One option I did early on was run a Pomodoro timer and bill every half hour, but a client brought up that I should also be charging for the hours I spend in traffic on the way to a meeting. My wife once asked why I bill $115/hour and not a round number like $120 or $100? How did I get the 5? I just kept raising rates to say no to jobs I didn't feel like doing, and found a point where I got the jobs I wanted.