Replying to ADHD: How do you handle it?

So I have some serious ADHD going on, to the extent of massive amounts of energy and drive to move to absurd difficulty with homework and time management, and even frequent RLS and everything in between. I have been able to channel some of the energy and intensity into my passions and sports and learning new things on my own, but with everything else it pretty much runs rampant through my life. Schoolwork, even though I score really well on standardized tests (/claim don't hate) and all that, has been dropping a lot. Not because I don't get it or can't understand it, but because I can't pay attention and can't concentrate on getting even a simple worksheet done, or reading a chapter in a book (cannot even pay attention if I play the audiobook and follow the words at the same time...). I have been on Strattera for longer than I can remember, so I can't really say how it affects me or how well it controls the Adhd, but apparently it used to work really well (not anymore lol). It is a less frequent prescription because it's a non-stimulant that you take everyday instead of just when you need it, and from what I remember it was really rough getting onto it and having my body adjust to make the effects consistent. Even now, if I miss a day it fucks everything up and takes a few more to get back to normal. I have been thinking about talking to my doctor now and saying hey look, this isn't working anymore, something needs to change. I feel like if I could just channel the attention, energy, effort etc. into a one thing at a time it would help me out sooo much. Like get me into that zone, that flowy feeling where you're just concentrated on one thing only, like what it feels like to be skiing when you're really stoked and everything is right. Obviously I can't expect to be able to turn a switch in my mind and be able to do that, but anything is better than what I am dealing with right now, its getting worse and worse to deal with, especially with school and other activities ramping up seriousness and responsibility due to age. My question to you all, is how do you handle it? Judging from the "Skiing on Ritalin" thread, I assume a lot of you guys have the same problem and probably more experience than I do.