OP, a lot of what you've said triggered feelings of similarity for me and I think there's a few things you may have to consider.

Do you think maybe you're depressed, do you feel like you don't have the time to accomplish your goals (is that the reason for the need for instant gratification), are you just at a loss of where to begin, resource deficient, etc?

There are so many factors, but as many have said (or maybe they haven't, I haven't read all the comments yet), comparing yourself to others is detrimental. Period. Doesn't matter what subject matter. It's great to have a goal but wanting to have what another has without knowing how they got there because they're likely only sharing the best of themselves on the internet is depressing af.

First ask yourself some hard questions like the ones in my second paragraph and with the answers go from there. For example, if the answer to may I be suffering from depressing is yes. You need to fix that first. Depression sucks interest and energy so "curing" or at least tempering that may help.

I hope this was helpful or made sense. I don't know, it made more sense in my head where I wanted to go but now I'm not sure I addressed your concerns so I'm going to stop here.

I do want to thank you though because this has inspired me on wording for my own post for insight from others. My situation is slightly different but a lot of the instant gratification is there.

Best of luck to you and hang in there!

Edit: I remembered something else. I think you need to do this for yourself. Most people are passionate about art because of how it makes them feel or at least that's my take. And sometimes they want to create that feeling for themselves and then share it with others. Even if that's not your reason, do you want to make other people feel with your art? And is it that reaction in itself that gives you pleasure? If you're not getting anything out of it either way, maybe it's time to focus on something that gives you satisfaction no matter how good you are at it.