For many years, I used to have a little html file I called "log.html" (just plain html) and at the end of every day before I left, I'd add a section at the top, dated, separated with a horizontal rule <hr>, with notes about what I did that day, and also little things I learned. When it came time to make my weekly status report, I'd refer back to it. I could also search through it and find various bits of information I'd written down. And if other people wondered what I'd been up to, they could look at it too.
Yes. I do this. In Gdocs though, name is productivity, where I add the day in format [dd/mm/yyyy] followed by bullets points on things I thought and did during the day.
It also helps me to wrap my mind around in the following weeks, like, what was I thinking? then I go back to the log, and remember the trail of thought leading to my decisions. It is quite worth a while doing this I reckon.
