I have 4 or so abandoned habit-tracker projects, and 7 "follow book" (essentially "following" a book series or author for release announcements/notifications) projects, all in different early states before I lost interest. I wish I could follow through with projects I’m not getting paid for ;)
Also had multiple failed journaling, reading, meditation, flossing, and exercising attempts, all of which have been fluctuating within acceptable bounds (e.g. some days I can only meditate 3 deep breaths) for the last 4 years or so.
This was a problem for me as well, but this post by Oliver Burkeman helped me take action and launch The Metronome : https://www.oliverburkeman.com/justdo
We can't act on every single idea we have, but it's better to bring at least one into the world than have several world-changing ones gather dust in a notebook.