I have zero accomplishment to show for any work I've ever done.
. . . .
I typically create new processes that help the businesses I work for run more efficiently or meet their goals. Yet, there's really no evidence I've ever done anything. There's nothing with my name on it.
These are two completely different things. Do you want to do things? Or do you want to be known for doing things?
I am in a very similar place: my job is to solve problems. Most of those problems shouldn't exist, because they are stupid, so half the time I am frustrated because I am doing shit that shouldn't need to be done if the world operated efficiently. So I guess you could say that my job is fundamentally to make a creaky, inefficient process a little more efficient, so my clients can do useful things.
I do have a few things I am proud of -- one particular criminal defendant who was totally not guilty and who we got charges dropped against after 5 years (the suspicion still ruined his career, but at least no jail/fine on top of it). One case that was the first in 25 years to overturn stupid guidance that is against the law but no one challenged because The Government Said (and it was a drum I had been beating for decades, so that was personally satisfying, even though it will probably get overturned on appeal). I just helped us navigate a really, really thorny integration of a new office.
But really, no one is going to remember my role in any of that. And sometimes I do have a little jealousy for my DH, who has quite a few patents in his name (dammit!). So I have to take my satisfaction from the problems I solve. At a very deep level, I hate inefficiency; I hate process for the sake of process; I respect the rule of law, and I get angry at retroactive reinterpretations to suit someone's current political agenda (you know, when one arm of the government is writing rules that say X is not required, another arm of the government shouldn't be suing companies for not having done X for the past 10 years. Dude.). Fundamentally, I hate the fact that my job is even necessary. But every time I help a project through, or negotiate a settlement, or help someone navigate what the regs require, I feel like I am doing some little bit to make the world run a little more efficiently, to make the law be what it should be -- so that maybe, eventually, in my dream world*, people like me won't be quite so necessary.
*Yes, there are unicorns.