I'll first explain what having ADHD is like.

Imagine you have a 10 y.o. with you at all times. Then you go out into a forest to cut wood. The kid is like "That's so cool! Let's do it!" and the kid helps you bring in wood, letting you do more than the average adult. Maybe you even end up making a game out of it so it's not even a choir anymore.

Now the next day you go to cut wood, the kid is like "That's boring, let's collect rocks!" now you have to keep an eye on that kid while cutting wood so you're now less productive than the average adult, even getting to the point where your kid is such a distraction, you can't get ANYTHING done.

That's what it's like. It's not  a matter of willpower, it's just...a thing. I've had to learn how to deal with it and despite wanting to die in school, making a game with ADHD can actually be super fun!

For starters, there's a lot of different things you can do. Sometimes I'm making a complicated enemy or something and I have to hyperfocus for hours on end, doing complex interwoven actions and making sure they don't conflict. Other days, when I'm more in an artistic mood, I can focus on making the level look cooler, make new effects, spruce up the UI ect. Maybe I'm not in a purely engineering mood but I'm not feeling art, then I can add more to the level and do some worldbuilding or general game planning. I mean a lot of what I do planning-wise, is all in a google document that I can edit whenever or quickly write down ideas when I have an imagination flare. However sometimes you're n the middle of some super good stuff then you find it: the bug, the mood killer. 

Something doesn't work right and you don't know why. After exhausting all your troubleshooting, it's time to go down the rabbit hole of Unity Manual Hell. Then when you've pured through documents and internet articles, it's difficult to get back on track. I try not to let myself burn out on one aspect of a game. For instance if I've spent all day doing atmospheric stuff, I might not want to touch it again for a while so it's important to not overdo it in any given area. Leave just enough of it for later that youll still get the bug in you to do it again. 

The downsides can be when you've done all the art stuff and the world building and now it's time to do the complicated stuff but you're just...not feeling it. Maybe there's a bug that's stopping you from proceeding forward with playtesting but you can't seem to get yourself in gear. Maybe you don't know what settings will affect this but when you have to deepdive into a problem just to fix a tiny bug, it can just...end your drive.

There's also the horrifying impulse to start a new project. While I'll admit I usually have between 2-5 projects I'm boucning between, only one project is my MAIN project. Everything on the side is mostly educational. I've learned alot messing around with side projects and sometimes it's important to just have fun without the pressure of needing to make a finished product so I make sure to give myself plenty of mess around time.

While ADHD is a flip of the cin on whether it's helpful or not, I tend to find it more beneficial with making games.