You can't ask someone else to control your desires. Take control of your life instead of delegating it to others. That's not fair to them, and they're not interested anyway.
You want what you want, and you need to deal with that. If what you want is detrimental to your life, you need to exercise self discipline.
But really it just sounds like you're not measuring up to an image in your head. People kill themselves over self pity like that, and it breaks my fucking heart. Learn to exercise some self respect. "I'm not an artist" fuck off with that attitude. There's not some cosmic council that got together to bring about the word "artist" into the world, you're an artist if you want to want to be one. I made this
and I know I was a god damn artist.
Now as others have said, you probably hit a road block and are wondering if you're still interested in putting forth the effort to get it from point-A to point-Head-Image. If you're not interested anymore, that's cool. You might be later, or you might not. Artists of all kinds have stockpiles of unfinished work. On that note, I understand how painful it is to come to terms with disinterest when you were really hyped at first. That's just an exercise in managing your expectations. You need to know how to do that because it will help you in all areas of life.
Creativity involves dedication, but it's also a crap shoot. You can't force it. Or if you do, people know. You know how you can hear a song and tell if the creator actually gave a shit?
You also might have let down some people who might have been eager to see the finished product, but that's also cool. They'll get over it.
Edit: it also sounds like you got hyped about your project before you really even knew how you were going to make it. Maybe gaming isn't for you like you said, or maybe you just ran into an unexpected hurdle and thought, "Oh shit, I have to learn this" and got overwhelmed. Or maybe I'm not even talking to anyone at this point because you've already moved on to something else.