I can’t speak for others, but I’ve actually found this to be an incredibly useful exercise. My thinking-but-not-doing, navel-gazing often occurred before I began keeping a meta-account of all my ideal habits.
Now when those thoughts arise, I either a) enact, b) figure out what’s stopping me from enacting, or c) disregard the thought.
So my answer to OP would be that the best habit you can have is a metahabit! Or rather, a scheduled (and public) review of the habits you’d like to do vs. what you’re actually doing.
If you say you want to read more, but you have to declare that you haven’t yet, week after week, you eventually break. You have to come to face what’s really going on, and what’s really stopping you.
Of course, this sort of systematic repetition is probably crazy, and I’m too far gone to realize it is.