I might agree, if I could ever figure out what is “meaningful” to me. I’m simultaneously incapable of sitting down and doing nothing (because I love pushing towards a goal) and also fully aware that goals are usually extrinsic and unfulfilling. Both deeply drawn towards big problems with a long march, and torn that by their very nature, I won’t get to undertake many (so choose wisely)
Seems like you've figured it out already. Pushing towards a challenging goal is exactly where meaning is to be found, even if it's difficult to enjoy in the moment. Growing through challenge and taking on the responsibility of life is where we seem to get more fulfilling results.
The common wisdom is that there is no meaning in work, which is the most common form of what I described, so I have to discount the possibility I’ve actually figured anything out.
