I'd agree that you're not in a good place to be at college given all of the circumstances (stress, depression, parent putting pressure on you, etc). Honestly, like [@BrokenPromise] hinted at with their comment, having a college education is really not the end of the world either. A lot of people find that after they've gone through college it doesn't even help them move forward that much in their life. So all you're really going to do is put yourself through a lot of pain when you could be spending that time moving in a better direction.

[@Vilageidiotx] is on the right track with suggesting you get independence first, since being tied down to a parent's rules will definitely have a negative effect on your mind in general. It's not surprising, or something to be bothered by, that you don't know what you want to do for a job yet. Many people go through a large portion of their lives never finding anything resembling a "calling". I'd say look around at the options available to you in your location (I'm aware some places are more difficult to find work than others), and then have an honest think to yourself about what you think would work for you.

Also, try not to be so caught up on concerns about failure. Honestly, even if you make a few mistakes, or don't immediately succeed at what you're trying to do, it isn't going to be the end of the world. You'll have more opportunities, so don't let little disappointments ruin you. It really does sound like your dad's giving you a lot of pressure. My parents divorced when I was 7, and I'm almost 33 now, so I know how difficult a divorce can make things for the children, especially since the parent I was closer to (but got to spend less time with) actually died shortly after I turned 17.

If you're really insistent on continuing college, you definitely need to get your dad to stop stressing you out. If your mother doesn't stress you out as badly, try speaking to them over the phone more often. Otherwise, yeah, a job involving animals sounds like it could work for you. Writing can lead people to success, but it's far more risky and takes a lot more effort/work/stress than college would be giving you, so it's not what you need right now outside of using RPing to help you relax.