Probably the most important thing is to find a resource or teaching that you whole-heartedly believe in, and follow it consistently, patiently. You may also want to read my recent post about how relaxation is the key to success in lucid dreaming. "Working hard [trying to 'force' a result to happen]" can backfire.

I can't advise about ADHD, but a lot of people in the LD community have it, and still lucid dream.

I personally follow a practice that not only benefits dreams, but waking life as well (as taught in "The Tibetan Yogas of Dream and Sleep" [the 2022 edition is the one to get]).

But you can't go wrong with ETWOLD. It *works*. Follow it, make the practice enjoyable, reach for dream recall on every waking, and really tune in to and become familiar with your dreams.

Starting with dream recall is great for a lot of reasons: it's much easier and faster to progress in dream recall than in lucidity, and building strong dream recall itself is an important cornerstone for regular lucid dreams.