The idea of "natural talent" has always bugged me as an artist. There is such a thing as talent, sure, but at the absolute most it influences how easily you might pick up a certain skill in the beginning. Talent's still useless without a buttload of hard work. Actually, people talking about "talent" like it's the most important thing around can be very dispiriting for a lot of artists because it can come off as brushing off the amount of work they put into their craft.

Someone can be the most talented person in the world at a certain skill, but if they don't put in any effort they'll always lose out to the least talented person at that skill who DID put in the work.

Drive is a much bigger factor than talent, but drive isn't really innate, either. There's ways to bolster your own determination, like setting goals and giving yourself small rewards for meeting those goals. If a certain way of working isn't working for you, it's important to branch out and try something else to prevent yourself from getting too frustrated, which might sour you on the whole thing.

And maybe above all, it's important to realize that just finishing images isn't how you get better. You can slave over a single frustrating image for days or even weeks, but finishing that picture won't help you improve nearly as much as trying a different approach would. You become so focused on this one image that you lose track of everything around it. If you can't make it work, try thinking of why it doesn't, and then take a break from the main picture and try to work on the skills you feel you need to fix what's not working.

You don't improve only when you finish an image, sketches and exercises are much more important in the bigger picture. Finishing a picture teaches you how to finish a picture, but sketching, exercises, playing around with colour combinations, all that stuff, that's the stuff that helps you get better at making images. And! Don't forget that it's okay to ask for help, too. Getting someone else's perspective on something is incredibly valuable, because they might see stuff you hadn't even thought of, especially if you've become distracted by wanting to just finish something.

That's the kind of stuff you need to keep in mind when you feel yourself getting stuck. It's okay to get stuck and feel frustrated, just don't beat yourself up about it too much. Talking about "natural talent" and all that stuff doesn't do anyone any good, because you're just creating barriers for yourself and others. It's okay to not be able to do something yet, so don't discourage yourself by buying into the myth that you might not be good enough or anything!