GreenFoxx211 In the first place, how do you define success?
To me, success is completing my novel, writing it all the way until the ending. Hopefully the people who read it enjoy and like it. If the readers hate my story, then I judge it a failure, but I'll strive to complete it anyway, because...well, you know what they say. If you're going to start on something, see things through until the very end.
On the other hand, there's also something about first drafts. Nobody writes perfect the first time. If you're not satisfied with what you write, and you think you can do better, don't be afraid to rewrite the whole thing and improve it. But you should not wait a few years. Writing is a craft. In other words, it's something you can only get better at by practicing. If you stop, only to pick it up a few years later, you will not improve. You will only get better if you continually and consistently write, practice, and write some more. So don't stop writing and wait another few years. Keep writing. And write some more.
You should also not believe about instant success BS. Most people fail. I know. I am a failure - you can ask the majority of my readers, or other writers, and they will be more than happy to tell you what a failure I am. Do I care? No. I write becaue I enjoy writing, and I continue to practice writing because I am determined to write better. Even if my current story or draft is awful, even if the whole world hates my story, I'll just write. Okay, I'll delete my story, I'll remove it from the site, I'll rewrite it from scratch if I have to, but I will never stop writing. This is not about confidence, but about perseverance and determination. I know I suck, I know I'm horrible at writing, but I'm not going to give up. The only way to get better is to keep writing, so against the mounting criticism, against the hellish flames and howls of hatred, I'll endure and write. Maybe someday I'll finally get better, but for now I'll just write. Additionally, what I said above about first drafts is relevant here. Most people appear to be successful, but I'm pretty sure a lot of them had written stories over and over and over again before they finally got to where they were. You don't succeed if you give up the first time. You only succeed if you keep at it until you finally reach your destination.
Continue and hope for the best. Don't wait. You're not going to get better if you wait. If you want to get better, you must practice more. You must continue writing, no matter what. Having experienced it firsthand, I can assure you that it will be tough. It will be mentally gruelling. It will be stressful, distressing, and utterly frustrating. There are many times where you wonder if you should just kill yourself if your writing is so bad that your readers actually send you death threats or harass you. But if you can endure all that and emerge a stronger person, your writing will naturally improve as well (theoretically, anyway...). The most important thing is to never stop, to never give up. No matter what.