Being able to pace yourself is a skill that's definitely worth learning. Some people pick it up from an early age. At the age of 41 I feel like I'm just beginning to get the hang of it now. Back when I was in my late teens/early 20's I had a pretty obsessive personality in that I would become fixated on one thing and concentrate on it to the exclusion of almost everything else. As an example, I got so obsessed with the Frank Zappa album "Make A Jazz Noise Here" when I was 19 that I don't think I listened to anything else for a year. I wore two tapes out and eventually bought it on CD as well. It got so I could play back the whole double album in my head like a tape recorder. But what happens is one day you wake up and bam, you can't do it any more. Burnout!
I did the same a few years ago with playing classical guitar. Taught myself to read music, taught myself classical technique and practiced for 6+ hours a day to the point where I was reading and playing Bach suites up to speed within less than a year. And all I listened to was classical guitar music. For that period of time it just didn't occur to me that there were other types of music. But the same thing happened, I just got burned out with it and woke up one morning and decided to move on to something else (which basically entailed shifting the guitar from the left leg back to the right leg, cutting my fingernails and picking up a plectrum again).
I've done it with learning other things as well. I decided I wanted to learn to program a few years ago and carried a huge manual of C programming around with me everywhere. I taught myself over the course of a few weeks by reading snippets on the subway, in deli lines, waiting for the bus, everywhere I had a spare moment. Then I'd go home and practice what I'd learned and spend the evening browsing C related articles and forums etc. Wrote a little app for my business. Really thought I was onto something and that maybe programming could become a career. Same thing - bam, not interested any more, burned out, moved onto something else.
So this music production thing - DAW's, synths, plugins, recording, mixing - I really want to stick at it. To that end, I've come to appreciate the fact that my brain works better when I give it smaller portions of a wider variety of material. So I started a
https://chains.cc/ account and set up a few chains that I have to contribute to every day - read a manual, watch a tutorial video, read a "normal" book, do certain exercises, play guitar, that sort of thing. The aim is to keep up a wide variety of habits and hobbies, even if it's just a little every day, so that I don't burn myself out with one thing. And it works. I find that I learn and retain information much better when I do it in snippets and take regular breaks to work on something else. I really wish I'd been hip to this in my 20's.