Keep writing. It’s as simple as that.
When I was 13 or 14, I wrote every day, often late into the night. The freedom I felt was amazing. Words flowing from my pen, ideas hammered onto the page with no hesitation.
Then I got a little older. Then I felt the Fear. Then I stopped.
Writing was a totally solitary activity for me. None of my friends did it (that I knew of) and I didn’t have much encouragement. As my mental health deteriorated and my confidence was smashed to pieces, I decided I was worth nothing. Thus, I couldn’t be a good writer. And I stopped.
If I could go back and talk to my younger writing self, I would encourage teen me to keep going. Keep writing. Keep enjoying.
I think that’s the most important thing any young writer can do.