I'm going to offer some more advice. The first part is infinitely more useful than the second.
Part the First
Toothpaste's post in Conquering Challenges -- print it out and Sellotape a copy to the wall above your desk, Sellotape one to your desk, and Sellotape a third to your computer monitor so you have to lift it out of the way before you can start work. It's that good. It's that important.
Part the Second
Random thoughts:
1. What does success mean to you? Try defining it -- but only in terms of what you can control. To be published doesn't count, because it's not in your control.
2. Always move forward. I'd stick a shark analogy here, but a lot of sharks don't have to move forward to survive, because buccal pumping is a thing. But, generally, be a whaler shark, not a wobbegong. Not that there's anything wrong with wobbegongs. And whalers are fearsome predators. You know what, I'm abandoning this right now.