Interestingly, at least to me, and after all this time, I noticed today how important it is that the fretting finger be firmly planted before the plucking finger hits the string. One might think that kind of thing to be second nature, especially by now; and maybe it is for most musicians. But it really became apparent to me today that one of the reasons that my notes aren't always cleanly played is the timing between the fingers on my left hand and those on my right. So I'm thinking that I should spend more practice time just focused on that.
I noticed another thing today. I've longed observed that practicing wears me out, that I seem really tired after putting the bass back in the stand; and it seems that at least part of that is mental fatigue. Today it occurred to me that perhaps one thing that is happening is that while I'm practicing, the mind is absorbing a lot of information, and that the mind needs time to process it all, constructing the proper neural pathways to best make use of it all. So I'm thinking that perhaps shorter more frequent practice sessions might be more helpful than longer sessions. I don't know; just something to play with going forward.
And something else I've been noticing recently. Practicing is exacerbating, at least temporarily, perhaps permanently, the tinnitus. Perhaps another reason to shorten the sessions; give the ears time to recover.
And a bonus observation. I'm seeing, experiencing, more clearly how music is interconnected with everything else. Music is the same as everything else that happens during the day. Everything that happens can be seen as a musical expression. There is an underlying beauty in everything just as there is in music; they are, everything is, intrinsically the same. Day to day life is an unending symphony. And sitting down to practice, playing music, recording music, is to give voice to that symphony.
The mystery of music is the same mystery as that of the universe itself.