My productivity hack is coming to terms with the fact that my life can't, and will likely never, be as optimised as the processes and routines that I like to optimize for work.

There is something about the oppressive guilt of being "unproductive" that, for myself personally, far outweighs any of the benefits gained from being hyper-productive.

Although I do feel a certain "high" when coming off of a full 8 hours of get-$#&+-done mode. I try to realize that isn't a switch that is flipped. It's just a derivative of my current state of mind.