Adult ADHD maybe? Helpful coping mechanisms?

After heavily relating to an ADHD meme that i saw here, I am now scared that I might have ADHD. I don't have any idea how I'd go about getting a diagnosis as an adult who didn't really have issues in school as a child.

I saw this article posted in this comm, and it seems to have decent advice. Anyone actually follow it here? Especially the adding structure bit?

I usually run away from structuring myself because it's too intimidating and I usually fall off the wagon. Anyone got any tips for being more organized with tasks and bigger projects/long term goals?

I think I mostly figured out the first point of "getting over your inner critic", but I feel like I need help getting through the other parts in the article, and it seems like organization/planning is crucial to that.