[jessems]

I've been tracking all my productive hours since November 2018. I can highly recommend it. I also know some others that do the same. nateliason.com comes to mind.

It's not as insightful as I expected, but certainly brings about enough benefits to continue doing it.

[dhimes]

I recommend everybody do it at least for a while, and go back to it when productivity suffers. It's remarkable how well it can keep you focused- not screwing off when you know you're going to have to write it down if you do.