I'm 34, was untreated for ADHD until a few months ago. I work in software development, and had various roles & responsibilities thrust upon me when people left. On top of that, managing a team through the COVID Lockdown and my own fracturing mental state really took a toll on me. The advice posted here is solid. When I took on everything, I had to learn these via Trail-by-fire. If I may add on:

• Always forgive people for their emotions. This is solid, but remember to apply this to yourself. You're human, too. On top of that, your ADHD is not something You're at fault for. Forgive yourself, don't punish yourself.
• Having trust in your team is paramount. Backing them up, treating them as equals, and sharing advice you've learned from the previous generations will bolster them. I've had a lot of new people come in, asking "why were things done this way?" And I ask them "Knowing what we know now, how can we make them better?"
• "Balancing criticism with praise" should be tattooed on the hands of anyone in charge of a team. Pulling people aside to let them know that you're proud of the work they're doing and how much they mean to the team as a whole is golden rule that pays dividends.
• This does feed into forgiving yourself, be able to take criticism, but being able to take responsibility without coming up with an excuse is a tough one. I grew up with a father who would get overly physical with failures and mistakes. It's in my nature now to make excuses so I don't get beat. Hard for me to accept that everyone doesn't think like my father does. But, failure is human. It's a chance to learn. It shouldn't be shunned as it should be observed and treated as acceptable.

All that being said, this was a great post. Thank you both!