Journaling is a great way to monitor and think on the results of your actions and improve over time. I've seen that, I've done it, I know it works. Yet I still can't bring myself to suffer through the act of writing down my thoughts. I don't like to belabor what is already done, I'd rather call good enough good enough and move to the next problem.

That said, I do establish systems to record efforts and results, they just aren't handwritten. Tables can be quickly searched and summarized.