Does it matter, now? You’re too old to go back to school. You can’t learn a new skill. You didn’t make it into honors class. you’ve invested too much already to switch directions.
Here’s the thing, there will always be someone who has read more books, done it for longer, or has more resources; but why should that stop you? There are enough people out there who will care what you are doing to make it worth it.
So what if you aren’t seeing the kind of results you want to see, yet. Just because others are a few years ahead of you doesn’t mean you should call it quits. That shouldn’t matter. If you talk to anyone, they, too probably feel like they got a late start or are behind.
It’s a marathon, not a sprint. And the one that makes the first move doesn’t always come out on top.