You're not gonna succeed in this!
I started my journey in high-school with a voluntary course on the basics of web development. That was in 5th grade when I was 11 years old. Our teacher handed me a pdf with the basic lines of html and css and I just randomly started typing them into the windows notepad. And that's how it all started.
During the last five years, I spent many long nights at my desk trying to figure out how things work. It started with simple and ugly websites (this was my first one). Over the time, I also got really interested in the topic of design, especially the user-experience part.
When I got better at the things I do, some voices raised and said "You're not gonna succeed in this!". First, that really pulled me down. I thought about whether it still makes sense to continue and to keep on trying. And the simple answer is: YES! Of course it is!
Don't let someone tear you down, just because they're jealous of what you have achieved and they have not. Keep on going, keep on grinding and find your way!