For right now, anyway.
I'm well known for being organized. I'm also well known for finding multiple ways to be organized. I've tried many different systems: a day planner, the Covey system, carrying a spiral notebook around, a dry erase calendar board, yada yada yada.
Each of those systems has their own inherent flaw. Someone rubs against the dry erase board, and all of the color coordinated notes are wiped off. It's kind of hard to tell what it might mean when the board says S_ret__fz.
A spiral notebook to carry around is usually pretty good for organization, but it's big and bulky and annoying. And those dumb planners either seem to lose the paper, I forget to update them, or I just plain old forget to look at them. I've even used a 3 inch binder, with tabs and slots for each kid, separated by category and activity. It was tons of fun to set up, but the upkeep was brutal and I gave up a couple of weeks in.
There's too many people here, and too many things for which I am responsible, for me to be able to go around being unorganized. About four months ago, I came up with a system that, right now, is working very well for me. It's a combination of a color-coded Google Calendar, and two sets of index cards, and a black sharpie.
Everything, and I do mean everything, is added into my Google calendar. Early morning band practice, cross country practice, doctors appts, need to fill medication - it all goes on the calendar. I do it either on my phone or on my computer, and they automatically sync up. I'm never away from one or the other, and so I generally have a pretty good shot at getting them added. I color coordinate them: Green for work, Teal for personal, Red for school, et cetera et cetera. Every day, I get an email reminder of what's on my agenda. It's usually there when I wake up in the morning.
Also, every Sunday evening, I pull out 6 5x8 index cards. I label each one for each day of the week ahead, and I jot notes on them. Anything I want to do on any of those days is written in, and then I fill in with house chores. As I do those things, I cross them off with a black marker. In the evening, it's an easy way for me to see what I've done during the day. Anything that I didn't finish can easily be moved over to the next day.
I use smaller cards to keep track of payments and freelance work due.They are turned over in that pic for privacy reasons. Also because I have a ton of payments outstanding and I don't want you to see that. :) There's a card for meals for the week, with days temporarily assigned to each meal in pencil - so I can swap them around. I have a card where I write the top 30 or so meals that at least half of the family likes, and I pick from those when I go shopping.
And I have really sloppy handwriting. And love me some black sharpie.
I also use "Hi, Future Self!" a ton. It's an app for my phone, and I can remind myself to do things with it. I use my voice dictate to say things like, "Remember to get milk when you go get your kid from school" - and then it will send me a text at the time I ask it to do so - and I use that just about every day.
So far, the system is working very well for me. I'm finding it much easier to get things done, and I'm having fewer instances where I forget things. Except, you know, for the time that my child forgot to tell me she needed to be at school at 6:45 a.m.
She remembered at 6:48 a.m.