Drinking Problem

I used to be an Assistant Professor in the Department of History, and I lost my job. I’m currently pursuing my PhD, and for the last one and a half years, I’ve been sitting at home. Initially, I was doing just fine. Then it hit me. Every day feels like Sunday. So I started drinking. I have four to five drinks every night. I don’t have any symptoms, and I don’t feel tired or bad. I can eat a normal diet. I know I can stop because I don’t even feel like drinking, but I still drink it. Why? What should I do? I am 26 years old.