Everyone around you seems to have a plan. You have a diagnosis, a few half-started directions, and a suspicion that choosing wrong costs you more than it costs them. Part of that is true. None of it means you should wait until you are certain. Certainty is not coming, and the research points somewhere more useful: the setting you choose changes how ADHD shows up.
An aspiration has no start date, no first move, and no way to fail. That is exactly what makes it comfortable to keep, and why it can sit untouched for a decade. Here is the procedure for converting one.
You can describe it in detail. The business, the degree, the book, the body, the move. You have described it to people, with real feeling. And it has never once appeared on your calendar. That is not a motivation problem, and not a sign you wanted it too little. An aspiration and a task are different kinds of object, and the reason you have not acted on this one is that it was never built to be acted on.
Why New Year’s Resolutions Are Dead (And What Smart People Do Instead)