[Yawrehto]

May I recommend How To ADHD? It's a YouTube channel (now book, too!) by someone who IS NOT a licensed doctor (it is fact-checked by someone who is though) but she does have ADHD and has a ton of recommendations, tips, et cetera. It's really helpful. There are also tons of online communities for ADHD.

And as for 'coaches', I'd recommend therapy (CBT in particular is good for people with ADHD - speaking from experience.)

Edit: Oh, you do have ADHD, guess I can remove all the 'you should see if you have ADHD' bits.