Don't know and there is so much I can't do, there have been long periods of not playing and ones of just settling for 3 chord wonder, etc. And even when playing music, practice can be sporadic...

One thing that I did try more with maybe one or two years back in terms of trying most nights does seem to have come on a bit though.

I can't quite explain it but I have become (to me) more fluent in terms of trying to pick out melodies. Still a long way to go to be able to do what I can on tenor banjo or mandolin (nothing spectacular but I'd sit second row in a few say Irish sessions reasonably well) but something, maybe the need for picking accross 3 instead of two strings and/or maybe getting more used to the std guitar tuning or a bit of both seems to have just happened lately.