I'm over 25 and have been writing/creating stuff for a super long time. I feel like you can tell some of my oldest writing is different from my newer stuff, even though both Nice To Meet You and Nearly There Nicely were both started during a writer's block hahahaha
I balance work with my creative endeavors. Work actually takes more energy out of me so I do less drawing while working consistently. It can also effect my writing habits, but I try to keep a steady pace of at least doing something every few weeks, if not several times a month. The trick is that even if I'm not able to produce something, I can think on it - my commute to work and appointments is 15min to 1hr long, usually 1 hr. And during breaks at work, I'll text a passage of writing to my email (a special one just to receive these messages), and then later I can stitch them back together. It's a lot easier to write at work than it is to draw. Haha!
Here's one of my stories done between the two above. It's one of the few completed works I have, and I actually really enjoy the pacing and insanity that goes through it. Kind of around this time, or just after, I started to realize that I enjoyed working with smaller cast sizes and started to downsize.