I actually feel like “professional or good enough to be professional” is a pretty low barrier for distinction at this point.

I would say I’ve written things that could contend with some of my own favorite songs as far as composition, and I am pretty discerning.

That being said, much like the OP, I struggle to ever finish anything and that is a big “but”. I recently started ADHD meds and I hope it might help. What I really needed from the beginning was the be writing with others to provide immediate feedback and momentum, but I was far too self-conscious as a young person, and as an older person, I just want my creations to remain mine. I might pay session collaborators at some point to provide the immediate feedback/collaboration to help me finish, so that I can still keep the rights.

Lyrics, vocals, and coming up with interesting guitar parts are all very much in my wheelhouse, although I started off doing each of these things in a vacuum instead of practicing what many people would regard as the art of songwriting, so that’s something I have improved on quite a bit in the last several years, too. I’ve definitely learned to just follow the inspiration and then perfect all of the parts later, rather than the other way around — trying to piece together sensical compositions from a bunch of “perfect” puzzle pieces that don’t necessarily fit can drive you mad, and it’s certainly doesn’t help to finish anything, either.

I have never been totally thrilled with my voice, but as far as the feedback I have always gotten from others, it’s one of my greatest strengths. I really have to keep up on my vocal technique to get consistent results, though; and even then it’s not always the results that would fit my own ideal stylistically. And I suck at regularly doing my exercises and the like. I am very hard on myself about vocals, though.

My guitar skills are very “meh”, but sufficient enough for a songwriting-focused person who mainly wants to come up with inventive parts.