It's hard to give advice for depression. What works for one may not work for another. I was in a bad place in my last 2-3 years of high school. Gaming, MW2forum and FPShq, school, even writting all became things to distract myself from myself.
One day I had no internet connection, no school, I had stopped writing and there was no food it the fridge for breakfast. I went to McDonald's. Walking home after, I passed my house and kept walking. To this day I couldn't say why. I walked for 4 hours. Thinking about nothing, about everything. Didn't realise it then, but as easily as had fallen into the hole I was out. Still had some dirt on me but it didn't take long to brush off.
You'll be out of this before you know it, literally. Take the advice these guys gave, they know more than I do, but I'll give you mine all the same, it was phrased perfectly in a movie I watched recently: This is an important moment in your life. Pay attention to it.