Personally, I haven't tracked my time as I find it very frustrating to be "clocking" every step. That said, I've seen quite a few people using https://www.rescuetime.com/ on daily basis; supposedly it helps.
I agree that some of these services can be tedious to use. I think that's part of the reason I'm curious about the potential benefits of dedicated use. In other words, are the specific numbers important enough to warrant the investment of time it takes to track your habits with such granularity?