Been feeling sh*tty want to get out of the hole?

For the past year ( atleast that's as far as I can remember) I've been feeling like everything is pointless, people are just annoying, nothing ever goes right, and I have this sort of numb feeling. I call it my hole because everytime you try to get out you fall a little deeper and it's a little harder to get out... I'm 13... I talked to my doctor and he said "you have an artistic mind. Take a month or two and you should feel better." that was over four months ago. How can I get out of my hole?