Not enough

Another rant. I have loads of schoolwork and other things to stress about. Saying that, I just thought: you don't wanna work hard, might as well do a course with a simple requirement. Yes, I'm seeing myself even further. that I don't really need a job that I will only fail because of my laziness. It's annoying. My actions annoy me but what can I do? I tried to change, many times and still, I'm stuck on this.