Such a great topic @Gio!! Thanks for bringing this one up!
I think for me it’s a combination of a few things. One thing in particular is by recording yourself. When I now look (or listen) back to some of my early covers from three years ago when I started playing bass I think to myself, “I need to do them over!”…. At the time I recorded them, I thought they were great…. Not so much now when I listen back but one thing is for certain,… I can actually hear that I have gotten better over time. Yea, recording yourself playing is a good way to determine how you’re doing….
Another way is by playing with other musicians. Band practice, jams, etc…. Feedback from other musicians is a great tool…. After one of our weekly band practices a couple weeks ago the guitar player looked at me and said something like “Damn Lanny, you’re really getting better!”…. Having been a former guitar player, a comment like that coming from the lead guitar player kinda made me thi k that wow, this is really cool!….
Then there’s my wife who never hears me practice since I always practice through headphones - she has however listened to every song I’ve recorded and had commented on how much better I have gotten.
As for myself personally, I think the one most important thing that makes me determine how I’m doing happens when I pick up and throw that strap over my shoulder, plug in, relax, block everything else outta my mind, throw on a smile,… and pluck that first note on a song with my bandmates……. Ain’t nothing more satisfying…
Keep on Thumpin’!
Lanny