This is a classic book on managing your life. I would guess that millions of people have read it and found it useful.
I read it many years ago and it’s made a huge difference in my life. The author likes to use paper files to put his method into practice. I prefer to use software, but that’s a personal preference.
I strongly, strongly, strongly recommend that you try the Getting Things Done (GTD) methodology, even if you hate organizing. Especially if you hate organizing.