Honestly, it’s probably close to impossible to stop thinking things like that. What’s better is to not try to stop it and instead, when those thoughts start coming around, to just slap it back into the hole it crawled out of with “I made this thing and it made me feel something (happiness, pride, relief, anything) and that in itself makes it important enough”. In general, it’s good to feel pride in your work and it’s a good idea to practice feeling it even when you’re not feeling all that great about it. It’s kind of like “fake it 'til you make it” in a way, I guess
You’re always going to be your own worst critic and you’ll see a million tiny errors because the end product doesn’t match what was in your head, but when other people see it, they don’t know what you imagined, they just see what you made out of nothing. Maybe some people will like it, maybe some won’t, but that’s on them, not you
Of course, knowing that there’s someone else out there who enjoys what you just put out also helps. If you have friends supporting you and what you’re working on, that’s great. Not too long ago, I kind of relapsed into a pretty bad place and I was honestly embarrassed to let any of my friends see anything I made because I felt like I was behind so many of them (most of them are also art students) Starting to show my stuff to my friends again and posting more work online and seeing positive feedback on it had honestly done wonders to my self confidence
Also, there’s probably going to be times where you just can’t write, or if you can, you absolutely hate every word of it. When that happens, it’s okay to take a break from it and do something else until you feel like you can get back into it again. Burnout happens to everyone and it’s frustrating but needing to take a step back every once in a while isn’t a thing to be ashamed of
Kiki’s Delivery Service was one of my favorite movies when I was a kid but I hadn’t watched it in years since I lost the VHS. I borrowed the DVD from a friend recently and watching it again as an adult and as an artist gave me a whole new perspective on it and I feel like it really gave me the boost I needed to get out of my slump. If you’ve seen it before, I think it would be good for you to watch it again, if not now then when you aren’t feeling so great about your writing. If you haven’t seen it before, (excuse my horrible summary skills) it’s about a girl who leaves home to practice her craft (witchcraft specifically) until things happen and she finds herself not able to do it anymore, then when she least expects it, she can do it again just as well as she could before
Maybe I’m a little biased since it’s been my favorite movie since I was five and I’ve always been fascinated by magic-type stuff and the mentor-ish type character has been kind of a role model hanging out in the back of my memory ever since the first time I saw the movie, but I feel like its message is something that all artists should hear at least once. Plus, if nothing else, it’s a nice feel-good movie to watch when you don’t feel like doing much of anything