Medication helps a lot. Realizing that my feelings of boredom and lack of motivation are only temporary, and building self-discipline to force myself through the day. Things always get better.
Budget. Also sleep on big purchases and really question whether or not you need it.
In addition to ADHD I also have major depression, so my place could get quite messy at times. I'm naturally a clean person, but when you're not quite stable it becomes much harder. I slowly started cleaning my place. I'd take my meds and then clean, slowly reversing the mess that I had made. After you get it entirely clean, keep it that way. It's easier to keep up than to catch up. Your messes are much smaller day-to-day rather than when they build up over several days. Just work on getting your place clean (one room at a time), and then pick up your messes as you make them.
University student still. It's very fulfilling, and even more so on medication. It was difficult without medication and I wasn't nearly as interested in learning as I am now. Meds put the joy back in learning for me.
Again, medication helps a ton. It lets me focus, even if the material isn't interesting. I can actually think about what I'm reading, rather than reading it and hoping that something will stick.
It's a shame that there's such a stigma towards ADHD. I know that there are a lot of people who don't believe that it's a thing, but it is. Some people are just too narrow-minded, and it's difficult and not even worth it to try and convince them. Fortunately my parents didn't have this problem, but I know that many do. Researching it yourself and explaining to them exactly what it is makes this easier. A lot of parents won't want to take the time to research it themselves. Just research it yourself and explain it to them and why it's different from just being lazy.
I personally can tell a huge difference being off medication versus being on it. I try and take a day off once a week if I can afford it. When I'm not on medication my brain feels scrambled, I feel like there's this weird buzzing/restlessness under my skin, and it can really drive you insane at times. When I'm on medication I have none of these problems. It makes me feel completely calm and normal. The first time I took medication convinced me that ADHD was a real thing.