I think I was 10 when I first started writing. And I wrote a lot up until my early 20s. I don't know why I stopped. I think it was a gradual thing and not caused by any singular reason. Part of it was I felt I had nothing to say anymore. Going to university was humbling, made me realise how little I knew and how many things I'd gotten wrong. I was also very unhappy.
I got a lot of praise for my writing when I was a teenager. I even got into a fairly exclusive creative writing program. I think back to what I wrote then and think I'll never be that creative again. But then this week I dug out my old SSD drive and read some of the things I'd written back then. Maybe I was more creative back then, but only because I was giving myself time to be. I'm definitely a better writer now. I feel a little less scared about trying to write again.
I'm currently writing a short interactive story to submit as part of an application for a writing job. I'm dealing with some serious imposter syndrome (why would they ever pick me?), but it's worth a shot, and I've kind of been enjoying the challenge.