I don't have the patience or discipline to teach myself so I want to go to college to learn how to do it.
This didn't sound good. Especially because it's not entirely true. It's the students that make the institution, not the other way around.
In college you will have briefs to do, and books that you'll have to read, and this is all yourself doing it; If you're not passionate about the area you will have a tough time going through this. You will have art and lab classes where the teacher may go around giving feedback on your work, but given your background in art I don't think that's enough.
It would be a very good choice to take practical classes in any independent artschool - you can find classes on basic 3D, drawing, sculpting, painting etc.
You need to improve your skills if you're choosing this craft as your profession. And as others have said it, your portfolio is the most important part when seeking jobs. You need to invest part of your time in college preparing material for it.
If you're not entirely confident on your course choice or how to go about it, there's a good place for you with information on this: Tom Sloper's Game Industry Guide (I linked to a specific page but you may want to read from the beginning).
There are more "game art" professions than he lists there (he uses the broad term "graphics"); you should go through game employment websites (such as Gamasutra and career pages on game companies such as Blizzard, Valve, Ubisoft etc.) and see what kind of positions there are. In game graphics you have Character art, Environment art, Special-Effects, UI Design, Level Design and Scripting etc.