Having a hard time quitting because I’m so sad

I don’t have any friends, I’m kinda a black sheep with my family, I wasn’t very successful, I just feel like I’m such a disgrace, I’ve actually at times thought it would be okay to die. Alcohol has been the only thing that temporarily makes me feel good. But it has led to so many problems and have become worried about my health, I know I have to quit. How to I get over feelings of failure and loneliness sober ?