I've been there and felt a lot of guilt for not doing all the things I wanted to.
One thing that helped was stopping to think about why I wanted to do each thing. A lot of the time, it was just impulsive and led to an overwhelming list that kept me stuck in the same loop.
Reflecting on what I actually cared about made it easier to focus and follow the other suggestions here. Not exactly what you asked for, but worth considering.
If the size it's the only reason to not create a repository, you could just use something like gist.github.com, at least, it would be more accessible for anyone not on lemmy