Ironic Infidel covered a lot what I was about to say. Sometimes you just need to get away from the situation sometimes. You're a teenager and it sounds like your dad has family to help him out. So you shouldn't feel guilty going to a friend's house for a day or even a couple days just so you can relax and get away from everything. I had a lot of issues at home and getting away sometimes gives you a clear head by the time you come back.
Try painting, drawing, playing music, going for a walk. They can often help stress.