My life sucks even more than last time i posted here. I need some advice before i go suicidal.?

I got laid off my job because they going bankrupt, now i cant get a new job, i barely have any money to pay for luxuries at all, it all goes to board with parents, both my parents are being mean thinking im useless in every way and saying i cant do anything that in useless and stuff. All i do know is drink whiskey every night to relive the pain cos i cant deal with it anymore, Sure i have free dental care now because i had 9 cavities that needed sorted, i quit drinking soda again another positive thing but still they is this problem of feeling like a loser and totally useless, for example an application to KFC (Kentucky Fried Chicken) Oh sorry you are not qualified! how the heck are you not qualified to fry chicken, and another application for cleaning, oh sorry your not qualified. Rubbish! anyone can be a cleaner. I am due to go in for a medical check to see if im eligible for disability allowance again. But iw ill only get �57 per week. If that.. and i just don't know what i can do anymore. Please help me cos im going suicidal and the only time i feel fine now is when im drunk off whiskey.