FOR ME, having a big binder/Excel spreadsheets/etc. is overkill. And I'm a big-time type-A, control-freak, plan-a-holic (in general, not just Disney)!
I save my e-mail confirmations for ADRs. They are also available in your My Disney Experience profile. We do one ADR per day at most, so it isn't difficult for me to just have those in mind, with the e-mails saved in my inbox should I need to cross reference. (I should note we don't do the multi-week trips some here do...it's 5-6 nights max for us. My method might not work for longer time periods.)
In order to make my ADRs, I do plan out in advance what parks we'd like to go to, taking into account crowd predictions as well as personal preferences, such as a desire to start and end our trip with MK, putting AK in the middle as a "slow down" day, etc. But since ADRs are made, I don't feel the need for any separate method of tracking which park we're going to since we don't hop.
Having been to WDW a number of times, we have a pretty good idea of a) which rides tend to have long lines and b) what our ride priorities are. I don't make any kind of structured touring plan that requires print-outs, etc. But I do know, for instance, that for our trip this summer we'll plan to cover Adventureland and Frontierland on our first MK day, riding Splash and BTMRR first then back-filling with the other attractions in those lands. We'll do the same with Tomorrowland and Fantasyland on our other MK day.
So, basically, I have plans--some set (like ADRs) and others loose (like attractions). But most of it is simply a game plan in my head, the same way I approach all the other areas of my life. I don't need a binder to get through my weekend to-do list. But I do have in my head that first I need to get groceries; then I need to clean bathrooms and mop; when I get hungry I'll take a lunch break; and if I have time I'd like to get started on repainting my deck furniture before our dinner reservation at 6. Same concept!
But, again, this is what works FOR ME and my family--it may not work for everyone. I just think you need to find an approach that helps you without stressing you out. It is a vacation, after all!