Can you suggest me ways to quit or reduce alcohol consumption?

Hi doctor,

I feel empty. I do not have any significant issues in life. I am sixteen years old and struggling to finish my studies. I do not want to be a burden to my friends and family. Around three months back, I got in touch with this guy who introduced me to drinking and smoking habits. Now I feel I cannot live without these, especially alcohol. It makes me feel good. I know it is wrong, but that is the only thing that gives me pleasure. I am drinking a lot. I can finish up to five drinks in a go. I know this doesn't seem right, so I am seeking your help. Please suggest ideas to quit or reduce this habit. My stomach does not hurt, but I feel guilty for putting down my family. I want to stop these habits.

Please help me, doctor.

Thank you.