I'm a physics major right now, but I've figured out that I'm just not smart enough to complete this. I struggle with every aspect of this subject. And I used to like physics, but the more physics classes I take, the less I enjoy it. How long would it take to complete a bachelors if I switched to biology? I've got a year left for my physics degree, but that's like 9 more physics classes, and I'm sure I'd fail some of them.