IMHO, the hardest part about English is that some teachers do a downright lousy job of teaching it. When I hit 7th grade, I got an English teacher who was a bit hard on her students... but partway through the year I realized that it wasn't that she was a mean nasty old person, it was because she was trying to push her students to succeed. Ended up pretty friendly with the teacher, I was into model railroading and so was her husband and I ended up being invited over to see her hubby's train layout (which spanned their entire basement and was set up to control something like 15 trains at once!). I managed to grunt out an "A" in that class by the end of the year. Since then I've literally slept through English classes and walked away with an A. Once you can master the concepts, it's easy. Math can be a bit of a tough subject because there is so much to learn.
Focus on the schoolwork man, don't worry about anything else right now. The truck will still be there and we'll still be here when school lets out for the summer. Lemme tell you from experience that that's the best way to handle things, you have to learn to be able to put school ahead of everything else (except maybe family and religion) if that's what it takes to succeed. Then learn to temper being stressed by school with having a lil fun here and there (my grades improved some across the board when I was able to have a truck handy to go wrench on when I was frustrated or stressed and could break away from the books for a lil while, just don't abandon the books altogether for the truck, that will drop the grades like a lead balloon).