Fellow ADHD here. A while back I downloaded a bunch of "Day in the Life" videos off YouTube of people accomplishing the type of productive stuff I need to do everyday then I used iMovie to splice together the best relevant parts starting with getting out of bed, going through the day and ending at night with getting back into bed. Now when I hit a rough patch where I can't accomplish anything I just start the video as soon as I wake up and follow along, going through the motions. This has had the greatest impact on me actually getting things done than anything else I've ever tried.

I've checked out the video but I got really distracted instead. Maybe I am not the target audience of this video but to stay on topic and expand on the same theme, I came across this video [1] that's probably more effective in extracting productivity gains from you than that video and I reckon it's less distracting as well:

[1]: https://www.youtube.com/watch?v=3RGEo2Kohb8

(4 Hours of Asian Mum to Help You Focus on Practising/Studying/Working)