A specific question, answered specifically.
Why ADHD adults keep buying planners we never use
The pattern is this: you see a beautiful planner, you imagine the version of yourself who uses it, you buy it, and the imagining feels enough like action that the actual using never happens. This is dopamine for the future-self, paid for by your present-self's bank account.
What actually works
Stop buying planners. Open one of the three you already own. Write today's date. Write one thing you're going to do today. Close it. That's the working amount of planner-engagement for an ADHD brain on a normal day.
The tool that helps is not a better planner — it's a permission system. Permission to write four lines instead of forty. Permission to skip Tuesday. Permission to use a system that's "ugly" because it works. The deeper version of this argument is in why ADHD people abandon planners.
What doesn't work
"This planner is different." It isn't. The bullet journal subreddit has thousands of beautiful unused spreads. Beauty is not the issue. The issue is fragility — planners assume daily showups, and you don't have daily showups. The streak-based mechanic that makes them brittle is in why streaks make ADHD worse.
Bullet journaling. It works for the people who post their spreads. Those people are not us. The people we belong to are the ones who started a bujo, made it 9 days, abandoned it, and felt worse about themselves than before they started.
The Deskrune version
SelfHealer Basics and the EF Kit are deliberately the opposite of pretty. The pages assume you'll miss days. There's a "you missed 4 days" page that points you at a specific recovery action — most planners would shame you, ours hands you a paragraph that says: this is normal, do this one thing.
If you want a physical version: a Leuchtturm 1917 dotted notebook ($22-26) is the planner equivalent of a blank canvas. Use it badly. Skip pages. The blank-canvas version doesn't guilt you for having used it imperfectly.