I dont know what to do with my life. I am so depressed? Talk to me please?

I am a 25 year old women. I have not accomplished anything in my life. I have my own place. I have no children, no boyfriend, no friends, I hate my job. I thought that if I get my own place and a job that I would be happy and things would fall into place. Happiness have yet to come my way. I don't do anything but sit in the house everyday. I am taking up a cl which I thought would add spunk to my life. I am just not happy. I am very grateful for what I have, but it isn't enough. Everyone appears to be happy. I really don't know what to do. I was thinking about enlisting in the Military but I think I am too old for that. I want to surround myself with better people and have a job that I enjoy. Nobody seems to take me serious and nobody seems interested in becoming my friend. Why?? I have tried my best to be a good person and people are just so rude, arrogant and egotistical. My family is a mess. We don't have a backbone in our family. Everyone is all about SELF. I know I have my faults and I am NO WHERE NEAR PERFECT, but i try to be the best that I can be and learn from my mistakes. Maybe there is something about myself that I don't understand that others may understand that draws them away from me. I always have this thought of killing myself. This is crazy. If someone could talk or give me some encouraging words, please feel free to share. I could use them right now.