I keep an “engineering logbook”. I surely helps me put things into perspective, I can’t say that it made me more “productive”, but it sure raises awareness on issues and this is enough.
I prefer pen and paper by far, so I ordered a personalised notebook, it is pretty good looking, most wouldn't touch it, but I'm planning on doing a collection of them.
By personalised I mean that it has my name on it and reads "Engineering Logbook #1". I ordered this book from Stamford Notebooks[1]. No affiliation, but they're I'm planning to ask some customisations when I order "#2".