Hey, guys, I'm writting in this forum because I don't know where else I can go

. I need help and I need it badly and I hope to benefit from your wisdom and xperience. I dont know where to start so i'll start anywhere.
I am anything but cool. I'm 28years old and I am a failure

. Nothing ever goes right for me and even a small or routine task such as getting an I.D Card replaced will end up in me having to make more trips than average, lost or misplaced documents or some other bureaucratic process that will lead to me taking a longer time than everyone else. If I can sum up my life experience so far, I would say it has been a series of bad decision after bad decision and lots of bad luck

.
I hate my job but nevertheless, I am a hard-worker. I happen to be the best on my team yet I dont seem to get any recognition out of it. I always wanted to go to university but I didnt make it in. I went back to school but nowadays, I seem to have such a short attention span that I can't concentrate long enough. My mind always ends up wandering and building castles in the air adn I can stare at one page for 30 minutes

.
I have no friends, Infact I have never kissed a girl and the last hug I got was 2 years ago and from a cousin, I have never had a girlfriend in my entire life! I have very low self-esteem. I am socially awkward and very shy and this always leads to people taking or trying to take advantage of me. I hate my job and I tried business but as would be expected, that didn't work out either.
I'm depressed and unhappy

and I have thought many times of ending my life but the only thing that keeps me from doing so is knowing how hurt my mother would be. She is the only person in the world that genuinely cares for me. I'm having a hard time just dealing with everything and right now, I'm planning to walk out of the office and just go somewhere, I don't know anywhere, I just want to get away from anything that reminds me of my miserable life.
It kills me to see other people much younger than me who seem to be makking it in life especially when I believe that I am just as good as them. What I don't understand is how come I'm the only one that gets all the bad luck? Why do good things happen to everyone else but me? Is it posible to change my life and my social awkwardness after being this way for almost 16 years?
I want some practical advice, give it to me straight and don't sugarcoat it please. Have you ever had such a long losing streak and did u break it eventually......what can I try to do to be better and should I go live in the countryside? Please tell me what u think and thanks.