Your comment show a lack of understanding of the condition. With ADHD, we suffer from difficulties with executive functions, like adhering to a planning, being able to chose to work on something...
I have obsession: I can't decide on what. I can work at length on complex subjects, again, probably not the one you expect.
It's not a choice.
Medication is not a silver bullet, but it allows, as explained in the parent article to do those things.
This is something that some good old-fashioned introspection (and meditation definitely involves introspection) might be able to fix for you. Learning to harness and redirect the inner energy of your "bad" tendencies is a well-established aspect of many kinds of therapy.
> Your comment show a lack of understanding of the condition.
Perhaps, since I'm not a specialist. I did use to think like you but I changed my mind through personal experience and helping relatives and friends with the same condition.
It's not a choice.
Medication is not a silver bullet, but it allows, as explained in the parent article to do those things.