Keeping a journal for....useful hints and tips

I read a lot about people keeping logs/excel spreadsheets/ goals lists (in fact I think I had one of those at one time) but it seems to have gone by the wayside in recent months.   I do keep an online progress journal on another site, but even that has developed into an informal soundcloud documentation of where I am with various pieces.  So that's not really a 'system' either.  What I have been doing of late is writing down (in a little book, longhand, with an actual writing implement) things I discover during my practice sessions. Useful, because my short term memory doesn't seem to translate into long term memory at all well, and scanning it before I start reminds me what specifically I need to be working on as opposed to just practicing a particular piece or exercise...

What do I write?  Often there are themes.  Currently the theme is relaxation.   Everything from building in "relaxation reminders" when playing a piece (to avoid getting more and more tense),  to  practicing slurs and remembering to relax the 'other' finger.   There's a whole chapter on this in  the natural classical guitar  by Lee Ryan including some interesting exercises to learn to 'actively' relax.  Which reminds me: I need to write one or 2 down to remind me to practice them.

Another thing I'm finding useful is to play pieces or parts of pieces with the iphone recording - and then writing down areas to work on after listening -  it helps to focus if I write it down.   I just started practicing the De Visee Prelude again and this was what I heard on the first run through...
- need to relax on initial phrase - otherwise it's hard to move
- fingers on same fret need to be closer to avoid buzz
- Following section is too loud too soon...
- Check score -  G is an 8th and can be released, which will help avoid the stretch
- Shift to G chord more consistent if hand is parallel
- Try ponticello instead of loud to contrast voices
 -Chord sequence is too abrupt - give it more space and legato
- Start decrescendo later (on A)
- First trill should be quieter
- Slur section needs to be quieter and even tempo
- Last note is too loud and need to hear the top note...

Another use for the book - I'm woefully inconsistent in practicing technical exercises, so I'm using them to warm up with.  Today I wrote
- Boardwalk - practice placement of 4 which is always too flat.
- Use the Brouwer piece to warm up.
- Learn required artificial harmonic tunes

It might be time to get a bullet tracker (see pic)....