I think u r living just negative live not because of Islam if ur drinking and smoking and having sex then what kill ur self si ur not doing something positive and actually I don't think ur really Qatari girl or ur family from Qatar so u have to do ur Salah and make do3a to Allah don't let ur self to run with these things let ur brain to breath with Quran and try to read it with ur hart.

I think also u have to go to Psychologist Dr.

Hope Allah help u