Do you ever feel destined to fail?

My grandpa committed suicide. 42 My uncle committed suicide. 23. My dad is depressed. My mom has severe anxiety. There's definitely something wrong with my cousin. I watched him kill a bird for fun. I just feel so hopeless and broken. I think it's in my genes. Most of my cousins are depressed or doing hard drugs. I'm severely depressed and I can't figure out how to get help. But my family's history makes me feel like I can never get better, like it's just how  we are.  Does anyone else feel this way? Plz give me stories to make me feel like I can turn this around somehow.