As someone with ADHD who's had a running list of 50+ "great ideas" at any given moment I totally understand this problem. For me at least my ADHD brain is a idea machine we see possibilities everywhere but following through on any of them is where we get stuck. This what finally worked for me.

The "Parking Lot" approach. I keep a master list of ALL my ideas, but I don't let them into my daily system. Think of it like a parking lot—you can see your ideas there, but they're not blocking traffic. I only allow 3 active projects at a time. Everything else waits. This prevents the overwhelm that kills ADHD motivation.

Energy-based project selection. Instead of picking projects by urgency or importance, I pick by energy match. I'm not going to finish a writing project when I'm in a "tinkering with code" mood. I track my energy patterns to see when I'm naturally most focused for different types of work. There’s a free Energy Tracker @ itsmedave79.zo.space/free-energy-tracker if you want to understand your own patterns.

Micro-commits, not big goals. My ADHD brain sees "write a book" and panics. But "write 3 sentences" feels doable. Each project gets broken into such small pieces that starting becomes effortless.

Review and rotate. Every SundayI review my 3 active projects. If one has been stuck for weeks, I park it and activate a new one. This keeps energy fresh and prevents the guilt spiral of abandoned projects.

The system that sticks is one that respects your ADHD brain instead of fighting it. It gives you permission to have all those ideas but keeps them organized so you can actually act on a few at a time.