How to get over depression/cutting yourself without telling your parents?

I’m 14 and I can’t stop cutting myself, nobody knows that I’m depressed, but one of my teachers thought that i might be and told my school administrator who in turn told my parents, and they yelled at me. So i don’t want my parents to know about cutting myself, I’m sad most of the time, with some brief periods of happiness, but they quickly go away. I tend to think about some things a lot, and always end up making it sad without trying, I cry to myself a lot, and don’t know what to do

How do I convince my father that he should go to Anger Management?

My father has serious anger issues that I unfortunately acquired by  hereditary means. I am now in my early twenties and have already addressed  my anger problems. I did this through Anger Management along with a strong need to not be like my father. I’ve moved back to my hometown and I am sickened by the reality of my fathers words/actions. (For the sake of my mother) if anyone can help, how do I convince him to go to Anger Management???