My life keeps getting worse feeling hopeless and suicidal?

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Here's my story I'm 21 and have no job when I graduated high school at 18 I turned 19 three months later and was going through a last name change that took months which made me wait for my driver's license. After that I started learning how to drive which took months because I failed a lot and didn't have much practice because a instructor cost a lot. Then I started practicing driving more because I was still very nervous while driving after I passed my test and still made some mistakes and driving frustrated me a lot and took months. After that I got a job but wasn't right for me it was not good for me and people there made it worse I ended up quitting and I was 20 when I got this job a year ago. I also had to help take care of my Grandfather before he died as well. I'm 21 now and can't find a job where I live it's been frustrating I been looking since June and can't get a job I've had a ton of interviews but they didn't hire me. I'm almost got a job but they didn't hire me because I didn't pass their online survey. This place I want to work at say's he'll give me an interview most likely when theirs an opening if I would applied in the summer instead of October I could of been hired the only problem is I might have to wait till February but the manager says he likes me coming in because it shows I want a job and this place is a market it so it hires all the time he says. Then I can get a job at a restaurant as well where I applied and they didn't want me but I know someone who works there and there getting new managers soon and she say's she'll try to get me in and both places I want to both work at since there close by. I owe my money and I really need money bad. I've never had a cellphone and need that and money for gas because I can't drive anywhere because my mom can't afford to pay for gas. It frustrates me that my younger family members work and I don't there still in high school. I don't know if I can go another without work it really depresses me depending on my mom. I never been out on a date because I have no money and no self confidence, and I'm really shy. There's this girl who likes me who works at this place where I get food and she likes me and I like her but I don't want to talk to her and tell her I'm a bum with no job I really want to get to know her she is my type and we both like each other. I'm really worried about my future and my life I want to complete these goals I have but can't because I have to meet a managers expectations and get their approval to be hired. My life keeps getting worse and I'm worried about 2014 will be the same as this year 2013 which is a let down. I also live with my Grandmother and all my family members put me down no one helps me they make feel like crap. From September 2011 to now it just keeps getting worse and I'm losing hope. I want to have fun in life not be depressed and miserable but it's hard when you have no money. I hate how my Mom has to support me I'm 21 and can't support myself and it's humiliating. People my age have a job, cellphone, car, and go out on dates. I really want to go out with this girl which I've said already and get to talk to someone my age which I haven't in a long time. I don't want to talk to her till I get my life together because I don't want her to put me down like my family. I feel bad for homeless people now more then ever because there struggling like me but worse. It's just so hard to reach my goals get a job, by a cellphone, get my things, and ask out that girl who likes me and I like her. I also want to help others. I just feel like this year is going to be horrible. I CAN'T TAKE THIS WAY OF LIFE ANYMORE.