I try to keep my full time job organisation in the office exclusively because I don't want to take that home with me but I note any weird hours I've got upcoming in my Google calendar. At work I use a weekly organiser where I can write lists of things to do/meetings etc and move them between days fluidly if I don't complete them. If it's a really busy week I use highlighters to prioritise which tasks I need to get done in order of importance. I also have a monthly whiteboard calendar with all upcoming events (I work in a music venue) and meetings and a whiteboard where I can write notes for the upcoming month. I also have my rota for the next three months stuck up in front of me with every day off I have planned so I know exactly where I need to be and when. I'm balancing a full time job and various creative pursuits and also life so I have to be hyper-organised with my schedule.
For general life organising I use my phone calendar for every time I need to do anything or meet somebody or be somewhere. I use different colours for different stuff (ie. Social, time sensitive, work). I find myself struggling to sleep if I know I've got things to do so adding in a calendar note for the next day so I don't forget is very helpful for easing anxiety. Generally I find visualisation to be the most useful thing and the more prepared I am the less stressed. Also means I can be flexible with my schedule cos I always know where I am.
I have used Evernote note taking app for ten years but I hate that they're charging for it now and I can't make any more notes without paying. Very annoying because it was convenient to be able to note on my phone and have it go straight to my laptop but I will not be convinced to pay £60 a year for an app I want to use for free lol so now I use Google notes on my phone.
I also have a very beautiful roadbook consisting of four notebooks: one for poetry/lyrics, one for art project notes and sketches, one for life admin lists and tasks, and a large ruled one for anything that requires a bit more working out or long form ideas. It has extra space in I can stuff any helpful scraps of paper in too.
In general too I find organizing things I use on a daily basis into categories really helpful. For example my bedside table has a little area for health stuff, one for ongoing research, a to be read pile, a tech box, etc. I think of it like "high traffic areas" so anything I'm using daily needs to be within reach and everything else can be further away or more hidden. This is part of my ethos for choosing that the things I use daily to be beautiful and enjoyable to use where possible to make life a little bit better.